ITZ~ChronStamp 
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The INTERNATIONAL DATE LINE, ZULU and WORLD TIME ZONES Reference STANDARD TIME ONLY
   The IDL Meridian at 180 is where the New World Day begins.  The IDL also defines the D/T for Time Zone Z01  [180E to 165E Lon].
     A tilde 
~ character indicates STANDARD TIME and a plus + character indicates SUMMER TIME.

           International Date~Time Line at 180 is Z01.00~ 
  Do 'Your Local PC Clock' seconds match the IDL Clock above?  Visit: NIST clock or NIST Widget
                                                      YOUR LOCAL PC CLOCK   
                                     UTC, GMT & ZULU at 0 is Z13.00~ 
  International Date Line at 180 Longitude is Z01.00~ 

    

IMPORTANT NOTES:
This web page, including text and graphics, is being redesigned to incorporate the enhanced features
discussed in this paragraph.  Please notify us of any descrepancies as this information is being updated.

Examples: Z18.00~20101120SA@1138AM~      Atlanta GA US EST            ref -75 Longitude
          Z13.00~20101120SA@163804~      Cambridge & Greenwich GB UK  ref   0
         
Z01.00~20101121SU@043804310~
   International Date-Time Line ref 180
* ITZ~CS is read from left to right in order of most significant to least significant data.
  A non-proportional serif font, like Courier, is suggested but not required. Color is not a requirement.
* ITZ~CS is stored in an Uppercase, Alpha-Numeric Only Formatted database field that sorts (aligns) from left to right.
* ITZ~CS begins with a "Z" and is terminated by a tilde
~ for Standard Time or a plus + for advanced Summer Time.
* The Standard version consists of 25 characters. The Logging version consists of 28 characters.
* ITZ~CS always uses a four-digit 24-hour format
where 1:00 pm is stated as 1300 and midnight as 0000.

* ITZ~CS seconds may be substituted with 'AM' or 'PM' in the 25-character format only.
* ITZ~CS now consists of three sections: (A and B) are fixed-length and (C) can be two lengths:
* Section-A ( 7-characters)         ZONE value:  i.e.
Z18.00~
through Z18.59~
* Section-B (11-characters)         DATE value:  i.e.        20101118TH@
 (TH@ replaces 'T' in the ISO Standard)
* Section-C ( 7-characters or 10)   TIME value:  i.e.                   1530PM/AM~
 153045~  153045123~
* A very fast, algorithmic function has been constructed around the ITZ~CS paradigm. The function references:
  1-DB-Server Clock 2-Preferential defaults database 3-CRM database fields (TZ_NUM & TZ_CB) 4-G.I.S. lookup database

* Miscellaneous:
 
A standardized shorthand format that might be used for handwritten entries on office forms
is: 'SA@0930AM'
  If character positions 4, 5 & 6 are '.00' they may be skipped when handwriting a complete ITZ~ChronStamp.

1. Consider NOT USING Microsoft's 'Date and Time Properties'. Clear the check-box labeled Automatic adjustment of DST.
2. Set your Local Time Zone to the proper time zone for Standard Time. (e.g. East Coast of the U.S. is Eastern Time  GMT-0500

    Or - Set your Local Time Zone one hour east of your normal zone for Daylight Saving Time. (e.g. Eastern to Atlantic GMT-0400)
3. Finally, adjust your PC clock to the correct Local Hour and Minute.


Please Note: The World Time Zone Graphics are being updated to reflect use of a tilde ~  for STANDARD TIME and a plus + for SAVING / SUMMER TIME.
Permission is granted to use the graphic above & below as desktop backgrounds. The map below looks good with a 'navy blue' background.
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{ITZ~ChronStamp copyright 2001~2011 by www.evectory.com}{World Map copyright 2006 www.SIDC.oma.be}

                                                  Longitude and Latitude lines on the map are approximate and are used for illustrational purposes only.

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Z24 and Z01 are separated by the International Date Line meridian at 180 Longitude. The IDL determines the Date and Time for Z01.
ITZone 1
First Hour of the New  World Day:  Suva,Fiji;  Marshall Islands;  Auckland:  Wellington;:  Vanua Lev;:  Kamchatk;:
ITZone 2
Okhotsk:  Noumea;  Magadan;  Solomon Is.;  Eniwetok  Atoll destroyed by 10.4MT H-Bomb "Ivy Mike" on 19521101SA@071459 (3-mile fireball);
ITZone 3
US-Guam;  Saipan;  Manila;  Urumqi;  Valdivostok;  Irkutsk;  Port-Moresby;  Sydney;  Canberra;  Melbourne;  Brisbane;  Hobart;  Adelaide / Darwin Z10.30;
ITZone 4
Seoul;  Tokyo;  Osaka;  Sapporo;  Yakutsk;  Victoria;  Yokohama;  Nagasaki;  Hiroshima;
ITZone 5
Hong Kong;  Beijing;  Singapore;  Manila;  Shanghai;  Chongqing;  Brisbane;  Ulaanbaatar;  Urumqi;  Irkutsk;  Kuala Lumpur;  Perth;  Taipei;
ITZone 6
Bangkok;  Jakarta;  Ho Chi Minh City;  Hanoi;  Krasnoyarsk;
ITZone 7
USA:  Diego Garcia;  Dhaka;  Almaty;  Astana;  Bishkek;  Columbo;  Novosibirsk;  Omsk;  Yangon / Rangoon Z07.30;
ITZone 8
Tashkent;  Islamabad;  Vladivostok;  Karachi;  Ekaterinburg;  INDIA:  Calcutta / Delhi / Chennai / Kabul Z08.30;  Kathmandu Z08.45;
ITZone 9
Abu Dhabi;  Muscat;  Tbilisi;  Dubai;  Baku;  Yerevan;  Reunion;
ITZone 10
Aden;  Baghdad;  Doha;  Moscow;  Kuwait City;  Mecca;  Nairobi;  Riyadh;  St. Petersburg;  Tehran Z10.30;
ITZone 11
Athens;  Alexandria;  Bucharest;  Cairo;  Cape Town;  Harare;  Helsinki;  Israel;  Istanbul;  Johannesburg;  Minsk;  Pretoria;  Riga; Sofia;  Sofija;  Tallinn;
ITZone 12
Paris;  Berlin;  Madrid;  Amsterdam;  Stockholm;  Rome;  Bern;  Brussels;  Vienna;  Frankfurt;  Budapest;  Bremen;  Copenhagen;  Oslo;  Zurich;  Warsaw;   Geneva;  
Prague;  Barcelona;  Bratislava;  Cabaa;  Arrange;  Kopje;  Vilnius;  Warsaw;  Zagreb;  West Central Africa;
 

ITZone 13
London;  Dublin;  Edinburgh;  Lisbon;  Casablanca;  Liverpool;  Cape Hope;  Monrovia;  Belfast;  Canary Islands;   Iceland;
Reykjavik; Dakar; Funchal; Banjul; Nouakchott; Bissau; Las Palmas; Conakry; Freetown; El Aain;  Monrovia;  Porto; Bamako; Rabat; Trshavn;  
Tanger; Yamoussoukro; Glasgow; Abidjan; Edinburgh; Cardiff; Liverpool; Birmingham (UK); Ouagadougou; Accra;  Lome; So Tom;

ITZone 14
Cape Verde Island;  Azores Islands;
ITZone 15
Mid-Atlantic;
ITZone 16
Buenos Aires;  Brasilia;  Georgetown;  Sao Paulo;  Montevideo;  Rio de Janeiro;  Greenland;  Newfoundland Z16.30;  
ITZone 17
AST:  Charlotte Amalie; Virgin Islands;  Puerto Rico;  (Caracas;  Charlottetown;  LaPaz;  Bermuda;  Santiago;  Valparaiso;  )
ITZone 18
EST:  Akron;  Albany;  Alexandria;  Allentown;  Ann Arbor;  Asheville;  Atlanta;  Augusta;  Baltimore;  Boston;  Bridgeport;  Brockton;  Buffalo;  Cambridge;  Charleston;  Charlotte;  
Chattanooga;  Chesapeake;  Cincinnati;  Clearwater;  Cleveland;  Columbia;  Columbus;  Concord;  Dayton;  Detroit;  Dover;  Durham;  Elizabeth;  Erie;  Fall River;  Flint;  Fort Lauderdale;
Fort Wayne;  Frankfort;  Grand Rapids;  Greensboro;  Hampton;  Harrisburg;  Hartford;  Hialeah;  Hollywood city;  Indianapolis;  Jacksonville;  Jersey City;  Key West;  Knoxville;  Lansing;  
Lexington-Fayette;  Livonia;  Louisville;  Lowell;  Macon;  Miami;  Montpelier;  New Bedford;  New Haven;  New York;  Newark;  Newport News;  Norfolk;  Orlando;  Paterson;  Philadelphia;  
Pittsburgh;  Portland;  Portsmouth;  Providence;  Raleigh;  Richmond;  Roanoke;  Rochester;  Savannah;  South Bend;  Springfield;  St. Petersburg;  Stamford;  Sterling Heights;  Syracuse;  
Tallahassee;  Tampa;  Toledo;  Trenton;  Virginia Beach;  Warren;  Washington DC;  Waterbury;  Winston-Salem;  Worcester;  Yonkers;  Youngstown;  (Toronto;  Kingston;  Havana;  Panama; )

ITZone 19
CST:  Abilene;  Amarillo;  Arlington;  Aurora;  Austin;  Baton Rouge;  Beaumont;  Birmingham;  Bismarck;  Brownsville;  Cedar Rapids;  Chicago;  Corpus Christi;  Dallas;  Davenport;  
Des Moines;  Evansville;  Fort Worth;  Galveston;  Garland;  Gary;  Grand Prairie;  Green Bay;  Houston;  Huntsville;  Independence;  Irving;  Jackson;  Jefferson City;  Kansas City;  
Lafayette;  Laredo;  Lincoln;  Little Rock;  Lubbock;  Madison;  Memphis;  Mesquite;  Metairie;  Milwaukee;  Minneapolis;  Mobile;  Montgomery;  Nashville;  New Orleans;  Oklahoma City;  
Omaha;  Overland Park;  Owensboro;  Pasadena;  Pensacola;  Peoria;  Pierre;  Plano;  Rockford;  San Antonio;  Shreveport;  Sioux Falls;  Springfield;  St. Louis;  St. Paul;  Topeka;   
Tulsa;  Waco;  Wichita;  Wichita Falls;  (Mexico City;  Winnipeg;  Saskatchewan;  )

ITZone 20
MST: Albuquerque;  Aspen;  Aurora;  Billings;  Boise;  Boulder;  Chandler;  Cheyenne;  Colorado Springs;  Denver;  El Paso;  Glendale;  Helena;  Lakewood;  Mesa;  Phoenix;  Pueblo;
Salt Lake City;  Santa Fe;  Scottsdale;  Tempe;  Tucson;  (Calgary;  )

ITZone 21
PST:  Anaheim;  Arden-Arcade;  Bakersfield;  Berkeley;  Burbank;  Carson City;  Chula Vista;  Citrus Heights;  Compton;  Costa Mesa;  Cupertino;  Daly City;  Downey;  El Monte;  
Escondido;  Eugene;  Fremont;  Fresno;  Fullerton;  Garden Grove;  Glendale;  Hayward;  Hollywood;  Huntington Beach;  Inglewood;  Irvine;  Lancaster;  Las Vegas;  Long Beach;  
Los Angeles;  Modesto;  Moreno Valley;  Mountain View;  Norwalk;  Oakland;  Oceanside;  Olympia;  Ontario;  Orange;  Oxnard;  Palo Alto;  Paradise;  Pasadena;  Pomona;  Portland;  
Rancho Cucamonga;  Redmond;  Reno;  Riverside;  Sacramento;  Salem;  Salinas;  San Bernardino;  San Buenaventura;  San Diego;  San Francisco;  San Jose;  Santa Barbara;  
Santa Clara;  Santa Clarita;  Santa Rosa;  Seattle;  Simi Valley;  Spokane;  Stockton;  Sunnyvale;  Sunrise Manor;  Tacoma;  Thousand Oaks;  Torrance;  Vallejo;  West Covina;  (Tijuana;  )

ITZone 22
AKST:  Anchorage;  Fairbanks;  Juneau;  Nome;  Unalaska;  
ITZone 23
US-HA:  Hawaii;  Adak;  Hilo;  Honolulu;  Wailuku;  Cook Islands;  
ITZone 24
 Last hour of the World Day:  US-Samoa:  Pago Pago;  Midway Islands;
Z24 and Z01 are separated by the International Date Line meridian at 180 Longitude. The IDL determines the Date and Time for Z01.
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ITZ~ChronStamp... Documentation and Information  (see Important Notes above)
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 The International Organization for Standardization ISO-8601 ANSI Standard specifies the condensed format used by an ITZ~ChronStamp.
        The IDL, UTC and the 24 International Time Zones reference Standard Time.  The GPS system references USNO-NIST.
        In the ITZ paradigm, Standard Time is indicated by a tilde ~  and Daylight Saving Time is indicated by a plus +
 
        Non-Standard time is under the jurisdiction of sovereign laws and local ordinances.


Purpose:
  ITZ~ChronStamps provide an ergonomic method of global date and time notation.
   * Incorporates and updates the International Organization for Standardization ISO-8601 Compressed formats
   * Efficiently typed and easily hand-written
   * ChronStamps use an immediately recognizable, open-source format that begins with a "Z" and ends with a semicolon "~ or +" 
   * It is alpha-numeric, indexed from left to right, i.e. most to least significant information
   * All letters are Uppercase and the standardized format is efficient and succinct. ITZ uses either 25  or 28 characters
   * It is an ideal date-time stamp for a database field that logs when a record was created
   * Cost effective. easily adopted and ideally suited to the logging requirements of digital hardware and software systems

Recommendations: 

   * The ITZ~ChronStamp be adopted by ANSI as an updated Standard that adheres to the International Agreement on time zones.
   * Standardized use of the ITZ~ChronStamp will improve the accuracy, security and reliability of information storage and retrieval.
   * A new ISO-Standard should be approved for global distribution, showing the correct relationships of the International Time Zones.
   * The ITZ~ChronStamp provides a Standard worthy of global acceptance and is compatible with current International Agreements.

Primary Rules Base:

  
The design goal was to use the smallest, fixed number of uppercase characters and incorporate the following:
  * The ChronStamp format is compatible with Unix,  Mac and Windows file-path constraints.
  * Only UPPERCASE characters should be used. Any English font style is acceptable, but a non-proportional serif font is recommended.

  * Fixed character positions provide fast, reliable character extraction, math calculations and unambiguous human comprehension.
  * "Z" is the START character, 2-DIGIT Time Zone number, Standard Time ~ or Summer +, 4-digit Year, 2-digit Month, 2-digit Day,
      2-character Week Day, at sign @ separator, Time is always shown in 24-Hour format as in 0h0m0s or 0h0mAM/PM
      and a tilde ~ or plus + to Terminate String..
  * The at @ character separates the human friendly day of week & the time.to prevent confusing the letter 'O' and number Zero and the l.
  * Each ChronStamp consists of either 25 or 28 uniquely positioned, uppercase characters that create an accurate chronological stamp.
  * Standard (local ordinance defined) time is accommodated by adding decimal digits 01-59 to advance the minutes.
  * Each International Time Zone includes 15 degrees of longitude of the total 360 referred to as 0-180 West
     and 0-180 East from the 0 prime meridian.
  * Each ITZ begins with a specific most Eastern meridian. Heading West, they are: 0W, 15W, 30W, 45W, etc..
     Heading Eastward they begin with 15 E, 30E, 45E, etc..
  * Longitudes 180 and 0 degrees are primary meridians, yet each is also a boundary between two IT-Zones (24/1 and 12/13).
  * The time honored use of the letter "
Z" continues to stand for 'Zulu' - which is the same as Universal Coordinated Time at 0.
     Note: UTC and Zulu are 12-hours behind the New World Day which begins at the International Date Line or 180.
  * Any date-time stamp without a reference to ITZ or UTC is historically incomplete unless a geographical reference is included.

       Examples of the STANDARD 25-character format and the 28-character LOGGING format that accommodates advanced minutes:
       Z01.00~20050829MO@011559~ Z18.00+20050828SU@091559123+   Washington,DC: Eastern Daylight Saving Time
       Z01.00
~20050829MO@011559~ Z23.00~20050828SU@031559123~   Honolulu, Hawaii: Year-round Standard Time
       Z01.00
~20050829MO@011559~ Z08.30~20050828SU@184559123~   New Delhi, India: 30-minutes ahead of Standard Time

    The ITZ format is compatible with the primary methods used to globally denote and calculate world date and time.
   *  Only uppercase characters are used.
   *  A Non-proportional font like Courier New is recommended; but neither a specific font or color is required.
   *  Any geographic area that uses off-set minutes is considered a Non-Standard Time Zone (NTZ).
   *  The earth is divided into 24 International Time Zones (ITZ) Z01 through Z24 of one hour each.
   *  The New World Day begins on the International Date Line (IDL) located at 180 Longitude.
   *  Universal Time Coordinated (UTC) is the preferred replacement for Greenwich Mean Time (GMT).

   *  A PC generated date-time stamp stored in a globally referenced field is designated a Local Time Zone (LTZ).
   *  Any d/t stamp without a Zone, a Global location or UTC off-set hours - is an Unknown Local Time Zone (UTZ).
   *  A time stamp designated with UTC, GMT or Zulu (military) is 12-hours behind the New World Day at the IDL.
   *  The first zone, Z01 includes E165 to 180 and the last zone, Z24 includes W165 to 180.
   *  The date and time for all 15 of an ITZone is the same as the most eastern boundary of the ITZone.
   *  Each ITZone includes 15-degrees of longitude, where 15 X 24 Zones = a full Circle of 360 and 24 hours.

   *  ITZones and ChronStamps always use Standard 24-hour time synchronized with the U.S. Naval Observatory (NIST).
   *  The International Date Line is located at 180 degrees and separates the last Zone-24 and first Zone-01.
   *  The Greenwich Meridian is located at 0 degrees, and separates Zone-12 and Zone-13 and east from west longitudes.
   *  Daylight Saving Time (DST) advances Standard time by one hour. DST is always indicated by the Plus + character.
   *  Standard Time is always indicated by the tilde 
~ character. This placeholder verifies the hour is not DST.
   For example: Advancing Time by one hour is the equivalent time of the more Eastern Time Zone.
  The Pacific Daylight Saving Time zone (PDST/PDT) is represented by  Z21.00+   same time as Z20~
      Eastern Daylight Saving Time zone (EDST/EDT) is represented by  
Z18.00
+   same time as Z17~
      Central European Summer Time zone (CEST)     is represented by  
Z12.00
+   same time as Z11~
         INDIA's Non-Standard Time zone (IST)      is represented by  
Z08.30
~   DST is not observed

The ITZ~ChronStamp Descriptors

The first zone Z01.00~ begins on the West side of the International Date Line or IDL.
The thirteenth zone
 Z13.00~ begins on the West side of the Greenwich Prime 0 Meridian.
and the last zone
Z24.00~
completes the 360-degree globe on the East side of the IDL.

Explanation
An ITZ~ChronStamp references Standard Time at Zone Z01.00~ at the International Date-Time Line (180 meridian)
UTC references Standard Time at Zone
Z13.00~ commonly referred to as UTC, Zulu or GMT at the 0 Prime meridian.
When parsing text, a 25 or 28 character string beginning with a 'Z' that ends with a ~ or + is a ChronStamp candidate.
The second step is verification of total character count (25 or 28) and valid component strings.
Char-Positions for Standard Time
SECTION-A contains 7-characters

Z             [C1] The letter Z begins a ChronStamp string.
01.00/24.00 
 
 [C2-C6] The majority of ITZ strings will be 25 characters  Decimal Digits (01-59) Are Required when NON-Standard Minutes are used.
                               The vast majority of the world references Standard Hours & Minutes;
~  or +      [C7] The ~ character indicates Standard Time. The + character indicates Advanced Time.
SECTION-B contains 11-characters
20090101
         
[C8--C15] Year Month Date in ISO-8601 Standard is a condensed format yyyymmdd
MO           
[C16-C17] Day of the Week uses (2) characters to improve recognition by humans.
@            
[C18] The 'AT' sign character separates Section-B (DATE) from Section-C (TIME) to prevent 'Ooh' and Zero confusion.
                               
It is also used as a verbal prefix in English. i.e. "Meet me on MOnday @  9AM",.
SECTION-C contains 7 or 10 characters
0000-2359   
[C19--C22] 24-Hour Time in ISO-8601 Standard's condensed format 0h0m with leading zeros OR
00-59 AM/PM  [C23--C24] OPTION: Seconds or AM/PM characters; even though time is always in the 24-hour format.
000-999      [C25--C28] Optional MILLISECONDS.
~  or +          [C25 or C28 ] Either a tilde ~ or a plus + character iis used as the last character to terminate an ITZ~ChronStamp.

Examples of other Date Time Zones
Z01.00~      IDLT   - UTC +12 hours at the 180th Meridian (Marshall Islands)
Z08.30~      India  - UTC +05 hours and 30 Non-Standard minutes
Z10.00~      Iraq   - UTC +03 hours
Z12.00~      France - UTC +01 hours
Z13.00~      UTC    - UTC +/- hours Greenwich 0- Degrees
Z18.00~      EST    - UTC -05 hours Eastern Standard Time UTC
Z18.00+      EDST   - UTC -04 hours Eastern Daylight Saving Time UTC
Z19.00~      CST    - UTC -06 hours Central Standard Time UTC
Z20.00~      MST    - UTC -07 hours Mountain Standard Time UTC
Z21.00~      PST    - UTC -08 hours Pacific Standard Time UTC
Z24.00~      M.Is.  - UTC -11 hours at the 165th Meridian
FR@          Day of Week (2) characters followed by '
@'
prevents letter 'O' and Zero confusion.
070100       24-Hour Local Time in HHMMSS Default format
0701PM       24-Hour Local Time in HHMMPM
an Optional format using AM/PM for local times
~ or +       Terminating characters

An ORIGINATORS' Local Date Time Descriptor is the first stamp following the Z01~ ChronStamp.
     Unlimited local Time Zone descriptors may follow a primary ITZ descriptor.


The NBS~Group of ITS Consultants believes many of those interested in calendars and clocks

have probably come to the same conclusion. It is a chaotic mess that gets worse every day.
   After surviving the year 2000 event, it appears that no country took the opportunity to recommend updating International Time Zone standards;
even though many were in obvious conflict with each other. While high-tech laboratories were counting ever smaller fractions of a second,
the majority of the world still can not calculate what the time or day is anywhere else in our shrinking world.
   In 1876, Sir Sandford Fleming of Canada proposed time zones for the entire world as part of a single 24-hour clock which would be based
on the center of the earth. Later in 1879, he also proposed a universal day that would begin at the 180 meridian. Yet, today as our military forces
fight in the middle east and elsewhere, major strategic and logistical errors occur far too often because of conflicting and confusing standards.
Today, it is possible to coordinate and schedule events to small fractions of a second,
but very likely - not on the correct day!

Compensation, losing or gaining a day is a confusing way of referring to a 24-hour day by creating more zones than there are hours in a day. 
   The IDL was established at 180 degrees in the late 1700's when most clocks were set at noon. Since most modes of travel and communications
were at or below the transit speed of the sun, this was of no major concern.
   Yet by 1925, electronic communications demanded that newer world standards be established; and the Greenwich Observatory became the standard.
The IDL remains to this day, the line where each day ends and a New World Day begins.
When the time at the 180-Degree meridian becomes 0001 or a fraction thereof, the Day Of the Week for the first Zone Z01~ on the Western
side of the IDL becomes the New World Day; and the other 23-Zones are the current day.
This process increments until the twelfth hour, when one might then consider the new day as current and the remaining hours as the Old Day.
When the last or 24th hour (2300-2400) steps or reached all 24 International Time Zones are the same day of the week during the 24th and
last hour of the World Day.
   Of course, the IDL is midnight at only one moment of the day -- the moment it is 12-NOON at Greenwich, England, or 7:00 AM Eastern Standard Time.
By International Agreements, the eastern most degree of each time zone denotes the beginning of the hour for the entire 15-degree zone, and
therefore the beginning of the New Local Day at local midnight. However, the New World Day still begins and ends at the IDL.

FCCSS.Net maintains Zone, Date, Day and Time Tables at one of the lowest, practical levels possible.
This on-demand solution pushes ITZ information for central office area codes, prefix codes (NXxs), Zip Codes, airports and County seat cities.
The calculated time values in eVectory applications are referenced to NIST time, and the day of the week at the IDL.
In eVectory software applications, date-time sensitive information is tracked for each event, occurrence or change.

Within eVectory database applications,
ChronStamps
are indexed and tracked like other information, e.g. phone ~'s dialed, account codes  and audit trail logs.
The example below shows a simplified CALL DETAIL RECORD (CDR), tracking the start and stop times for a voice or data call.
Additional fields such as trunk number, route, email addresses, etc. are not shown here; nor are fields provided by other systems like scheduling or call accounting.
The following example describes CDR-0001234 for Stephen (SDC) in Atlanta calling John (JDA) in San Francisco.
By default, the 'Start' and 'Stop' descriptors reference the IDL or Z01.00  - reducing the number of steps required to calculate the total length (holding time)
and report on the call or data connection.
CDR-0001234 Z01.00~20090117MO@033820~START;Z18.00~20090116SU@1038AM~SDC;
CDR-0001234 [pbx data i.e. CO or PBX phone#'s, Routes, Trunks, Conditions, Cost, Codes, etc.]
CDR-0001234 Z01.00~20090117MO@034530~STOP;
Z21.00~20090116SU@0745AM~JDA;
In a typical pbx, CDRecords must include sufficient data in order to provide information to merge, describe and cost connections
into a
vectory
of eVEnts. A typical CDR includes a great deal of information in many different formats.

For instance,
a pbx manufacturer might include additional data positioned for their purposes in-between the
Time Zone Descriptors - e.g. route numberss, trunk numberss, departmental info-accounting codes;
where a single continuous connection typically requires only one CDR, a transferred call will involve two or more CDR's.

CDR"s are serially output in chronological order as each event occurs to facilitate printing or display on many different devices.
In most systems, a very large amount of redundant data is generated requiring more storage.
This redundant data storage has historically been necessary for external software systems to process, cost, query, merge --
in order to provide sophisticated query reports. ITZ~ChronStamps improve the efficiency and reliability of CDR data and
should be considered by telecommunications and computer equipment manufacturers.

Additional References and Links are provided below to quickly access other important web sites and web pages.
Definitions
Wikipedia Encyclopedia

Sidereal Day (23 hours, 56 minutes, 4.091 seconds)
Solar Day
Time general definitions
History of Time Zones
UTC~Coordinated Universal Time

Visit two of our favorites:
Time an Date.com
, The United States Naval Observatory~NIST clock.
The NIST web site also has information on how to correct Windows/XP clock issues.
Current Date and Time for International Date Time or ITZ~ChronStamp at  Z01~

United States Naval Observatory, Washington, D.C.

Front View {short description of image}
Visit:  The U.S. Naval Observatory
The USNO Copy of "The New American Practical Navigator" by Nathaniel Bowditch
Z-Time
  by Harold F. Maybeck
An excellent summary describing the beginnings of world time zones by Nathaniel Bowditch.
Many contemporary maps incorrectly reference historic navy sources - causing confusion and misunderstanding
for readers studying today's 24 Standard International Date Zones (ITZ) and the Global Positioning System of
satellites..

It is also important to realize that on any January 1, the sun is continuously above the horizon across most of Antarctica.
Therefore, if the question is really, "Where will the sun first be seen after the beginning of the new millennium...
or any New Year?" the answer is simple: Antarctica. However, if you are interested in the first sunrise, the question
becomes more involved. The fundamental issue is when you think a new day, or a new year, begins.
Does it begin at local midnight, in the time zone defined by the local jurisdiction?
Or does it begin at midnight on the meridian of Greenwich, England (the zero longitude meridian), that is,
0 hours Greenwich Mean Time? Astronomers refer to the latter instant as Zero-Hours
Universal Time (0H UT) & that is the usage here.
The Washington Prime Meridian Conference of 1884, which established
the Greenwich Meridian as the prime meridian, did not settle this matter.
The final resolution states: That the Conference
proposes the adoption of a universal day for all purposes for which it may be convenient,
and which shall not interfere with the use of local or other standard time where desirable.


Thus, the two conflicting definitions are enshrined in international law.

In the following, we (USNO) define local time as the time zone (civil time) established by the local governing authority,
except in Antarctica. In Antarctica (and the surrounding waters), local time, as used here, is the time zone defined by
the nearest meridian of longitude that is an integer multiple of 15. "

Reprinted from Astronomical Applications on the web-site of the U.S. Naval Observatory.

WHAT IS U.T.C.?
Universal Time Coordinated was established in 1925, specifying the Zero Meridian location at Greenwich, England, but for
determining time only - not the day of the week. A day and a night have been the measure of a complete daily cycle for
thousands of years. Some religions established the setting sun as the end of a day; while others referenced the lack of
shadows to designate the middle of the day, since the rising and setting sun varied throughout the year. While man for his
convenience, continues to sub-divide the day into smaller and smaller pieces - the fact remains that for one brief, daily
moment we each are at the end of the old and the beginning of a New Day.
It is during the last or 24th hour that the day of the week is the same for all of us.
For astronomers, the Date-Day Line moves with the minute we refer to as midnight or 2400/0000. Interestingly, astronomers
use zero longitude to be the separator of the old astronomical day from the new, the beginning of a new month, a new year
and the new Millennium; while the worlds of commerce and transportation use the International Date Line.

WHAT IS I.D.L.?
Time zones were first proposed for the entire world by
Canada's Sir Sandford Fleming in 1876 as an appendage to the single
24-hour clock he proposed for the entire world (located at the center of the Earth and not linked to any surface meridian!).
In 1879 he specified that his universal day would begin at the anti-meridian of Greenwich (now called 180), while conceding
that hourly time zones might have some limited local use. He continued to advocate his system at subsequent international
conferences.
Reprinted Courtesy of www.Wikipedia.org

The 180th meridian was chosen as the International Date Line by the International Meridian Conference in 1884. This line has
been agreed internationally to mark the beginning and end of a World Day. The IDL is "An imaginary line on the earth's surface
that joins the north and south poles and approximately follows the 180-degree meridian through the Pacific Ocean. A traveler
moving towards the east, against the sun's apparent movement, gains 1 hour for every 15 degrees of longitude. Traveling
westward he loses time at the same rate. In crossing the dateline therefore he is deemed to compensate for this by losing or
gaining (respectively) one day.
Reprinted Courtesy of Oxford University Press from 'A Dictionary of Science'

Notes on IDL
The old paradigms have become inappropriate for the modern world of supersonic travel, GPS and speed of light
communications. Use of the constantly changing zigzag path of the IDL and ITZ boundaries should be abandoned and removed
from out of date world maps. The NBS~Group recommends revision of the legacy definition of IDL as follows:
All references to International Time Zones shall be considered as Standard Time only.
Date and Day shall follow their logical sequence of new versus old (1/23, 2/22,...23/1) until all IT Zones are different hours of
the same day. The abbreviation 'IDL' should be considered the official abbreviation for the International Date Longitude -
at 180 West. A more accurate paradigm would be country names suffixed with the IT Zone used. e.g. Hawaii <Z23~> or
India <Z08.30~>, no DST observed. If a tilde ~ or + character is included, the predominant time observed is indicated.
For example in the United States, US<Z18+> indicates Daylight Saving Time <+> is primarily used and Standard Time <~> is secondary.
Countries on either side of the redefined IDL could still choose their date and time as they always have.
Some countries advance their day without advancing their time and vice versa.
 

History of the International Date Line and Web Pages on the History of Astronomy
   
by Robert Harry van Gent

Geography Time Zone Dateline 1999AUG03 from www.About.com
Prior to the late nineteenth century, time keeping was a purely local phenomenon.
Each town would set their clocks to noon when the sun reached its zenith each day.
A clock maker or town clock would be the "official" time and the citizens
would set their pocket watches and clocks to the time of the town - enterprising
citizens would offer their services as mobile clock setters, carrying a watch with
the accurate time to adjust the clocks in customer's homes on a weekly basis.
Travel between cities meant having to change one's pocket watch upon arrival.

However, once railroads began to operate and move people rapidly across great
distances, time became much more critical. In the early years of the railroads, the
schedules were very confusing because each stop was based on a different local time.
The standardization of time was essential to efficient operation of railroads.

In 1878, Canadian Sir Sanford Fleming proposed the system of worldwide time zones
that we use today. He recommended that the world be divided into twenty-four time zones,
each spaced 15 degrees of longitude apart. Since the earth rotates once every 24 hours
and there are 360 degrees of longitude, each hour the earth rotates one-twenty-fourth
of a circle or 15 of longitude. Sir Fleming's time zones were heralded as a
brilliant solution to a chaotic problem worldwide. United States railroad companies
began utilizing Fleming's standard time zones on November 18, 1883.

In 1884 an International Prime Meridian Conference was held in Washington D.C. to
standardize time and select the Prime Meridian. The conference selected the longitude
of Greenwich, England as zero degrees longitude and established the 24 time zones based
on the Prime Meridian. Although the time zones had been established, not all countries
switched immediately. Though most U.S. states began to adhere to the Pacific, Mountain,
Central, and Eastern time zones by 1895, Congress didn't make the use of these time zones
mandatory until the Standard Time Act of 1918.

Today, many countries operate on variations of the time zones proposed by Sir Fleming.
All of China (which should span five time zones) uses a single time zone - eight hours
ahead of Coordinated Universal Time (known by the abbreviation UTC - based on the time
zone running through Greenwich at 0 longitude).
Russia adheres to its designated time zones although the entire country is on permanent
Daylight Saving Time and is an hour ahead of their actual zones.
Australia uses three time zones - its central time zone is a half-hour ahead of its designated
time zone. Several countries in the Middle East and South Asia also utilize half-hour time zones.
Since time zones are based on segments of longitude and lines of longitude are narrow
at the poles, scientists working at the North and South Poles simply use UTC time.
Otherwise, Antarctica would be divided into 24 very thin time zones!

The time zones of the United States are standardized by Congress and although the lines
were drawn to avoid populated areas, sometimes they have been moved to avoid complication.
There are nine time zones in the U.S. and its territories; they include Eastern, Central, Mountain,
Pacific, Alaska, Hawaii- Aleutian, Samoa, Wake Island, and Guam.
Reprinted Courtesy of www.About.com and for more information about Daylight Saving Time


Historically, the globe has been divided into two groups of twelve-hours longitude each.
   If one traveled east of the prime meridian, one subtracted hours; traveling West one added hours.
   Accurate time was calculated at the prime meridian for many years by the peak height of the sun at noon.
   Consequently, the 180th meridian, twelve hours away on the opposite side of the earth, became known as the
   International Date Line.
   Latitudes are referenced as 0 to 90 degrees North or South of the Equator.
   Longitudes are referenced as 0 to 180-degrees East or West of the Greenwich 0-Meridian.
   This system became standardized in the late 1800's for determining a ship's location a sea.
   A ship's clock was synchronized with the master clock at Greenwich. When used in combination with navigational instruments,
      mathematical tables and the position of the Sun and Stars - a navigator could calculate the longitude and latitude of his ship.

The ITZ~ChronStamp Rules Base
The following is a detailed explanation of the mathematical operations for software programmers.
The calculations are actually very simple. They can be performed using one's fingers or in one's head, so to speak..

1.  There are 24-Hours in each Day and there are 24-International Time Zones encompassing the globe.
     * The first 12-Hours of each Day are numerically counted the same in 12 or 24-Hour time.
     * The second group of 12-Hours in each Day continue counting with 13 representing 1:00 p.m., and 23 representing 11:00 p.m..
     * To convert regular time to 24-Hour, simply add 12 to the regular time from noon to midnight. 1:00 p.m. is 1300PM & 2:00 p.m. is 1400PM.
     * To convert 24-Hour time to 12-Hour, subtract 12 from the hours 1300 to 2400. (e.g. 1800 is 18-12 = 6:00 p.m..)

2.  Circles, including the Earth are represented by a total of 360-Degrees.
     * Each Time Zone is 1/24th of the 360-degree circle or 15-degrees of arc.
     * Care should be exercised when viewing a World Globe or Map, since many are marked with Longitude (vertical) lines
         that are not 15-degree sectors.

3.  By International Agreement
     * The time at the most-eastern leading edge of a Time Zone determines the Hour and Day for the 15-degree zone that follows.

4.  The International Date Line (IDL) Time is located at 180 Degrees.
     * The IDL separates the last Zone
Z24~ and the first Zone 01~.
     *
Z01.00~ covers 180 to 195 degrees or East-165 to East-180.

5.  Always "Follow the Sun" or Go West Young Man, Go West.
     * If both zones are the same status, i.e. observing, or not observing Daylight Saving/Summer Time (DST),
        simply subtract the two Zone numbers.
        (e.g.. If a person were in Atlanta,
Z18~ or the other is in London, Z13~ - the answer is 18-13 = a difference of 5 hours.)
     * If both zones are not the same status,  i.e. one is observing Daylight Saving/Summer Time, then
        If the higher zone number is not observing DST and the lower zone number is observing, then subtract the two  numbers and add one hour.
        (e.g.. If a person were in New York,
Z18~ (EST - November) and their associate were in London, Z13+;
        then the calculation is 18-13+1 = 6 or a difference of 6 hours.)
     * If the higher zone number is observing DST and the lower zone number is not,
        then subtract the two numbers and subtract one hour.
        (e.g.. If a person were in London,
Z13+ (November) and their associate were in Guam, Z03~;
        then the calculation is 13-3-1 =  9 or a difference of 9 hours.)

6.  Z01~ is the first zone West of the IDLT at 180-165E degrees and
     
Z24~ is the last zone East of the IDLT at 165W-180 degrees.
     * Eastern Standard Time,
Z18~ is 17 hours behind the NEW World Day and
     * Eastern Daylight Saving Time,
Z18+ is 16 hours behind the New World Day.
     *
Warning: Some Pacific island nations have chosen to use the same time for all of their country, even though the IDLT is involved.

7.  The Current or old Day ends in Z24~ and the New Day begins in Z01~.
     * When the time in
Z01~ is 11:00 - 11:59 p.m.(23:00 to 23:59:59) the entire World will be the same Current Day.
     * When the time in
Z24~ is 12:01 a.m. (00:01 - 00:59:59) then Z01~ begins a New Day & Zones 02-24 are still the Current Day.
     *
Note: During the last hour of the Current World Day, the Day of the Week will be the same crossing the IDL in either direction.

8.  Memorize Your Local Time Zone Number.
    * The use of 24-zones is logical, easier to grasp and teach than the archaic and confusing system originally designed for mariners.
       It will benefit all facets of business, government and personal life.
    * Determine what your Local Time Zone number is by finding your city or a city in the same time zone where you are located.
         (e.g. Eastern Standard Time is
Z18~ and your local geographic area observes Daylight Saving Time -
         then replace the tilde (~) character in
Z18~ with a Plus (+) character to indicate DST is being observed.)

9.  Next, Memorize Your Local Time Zone Difference.
       
Honestly, this really is simpler than it looks below, and can be done in one's head (mentally calculated).
    * First, subtract the primary zone 01 from your time zone - found in the table above - to determine your Difference Number.
         e.g. Standard Time Difference is 18-1 = 17 and Daylight Saving Time (DST) Difference is (18-1)-1 =16.
         If the difference number were 17, it means the New World Day begins 17 hours before local midnight..
    * Next, simply add your difference number to your local 24-hour time.
         e.g. If your local time is 1:01pm (1301PM), add 13 and 17 (Standard 13+17=30).
               If the sum is 24 or larger, subtract 24 (hours) to determine the current hour on the International Date Line.
               If the sum is 24 or larger, the day of the week (and date) will be tomorrow on the International Date Line.
         e.g. If your local time is 5:01am (0501AM), add 5 and 17 (Standard 5+17=22).
               If the sum is less than 24, the number is the current hour at the International Date/Time Line, i.e. 2201pm (10:01pm).
               If the sum is less than 24, the day of the week and date are the same as your local day and date.
    * In New York, Washington or Atlanta, the New World Day begins at 7:00am (0700AM) local time, and 0800AM during Saving/Summer Time.

10. How to Determine the Current Hour of the New World Day in Z01~.
     * If the hour at the International Date Line is 1001AM:
         the NWD has begun its 11th hour and 13 Time Zones are in the Current or Old World Day.
         For twenty-three hours a day, there are two days being observed, the Current or Old Day and the New Day.
     * During the 23rd hour of 2300 through 2400, there is only one day of the week globally observed,
         and all 24-International Time Zones are New.


The NBS~Group of Consultants Respectfully Recommends to:
         The U.S. Naval Observatory
         The United States Congress
         The American National Standards Institute
         and The International Organization for Standardization

*   Convening an International Conference to be hosted by the U.S.N.O., A.N.S.I. and the I.S.O..
     The goal would be replacement of the outdated and conflicting standards of 1884-1925 with a logical, algorithmic perspective
     for representing world date-time zones by defining a new  International Date/Time Line ISO-Standard.
*   Adopting a new standard for use in education, business and government,databases, graphical displays, commercial products,
     and printed materials; plus security, log, email, document and work-order applications.
*   Continuing the International Agreement specifying that the eastern most degree of each I.T. Zone shall determine the hour
       for the entire zone.
*   Redefining, renaming and renumbering the 24 time zones as International Time or Information Transport Zones (IT-Zones).
*   These IT-Zones would be represented by integers Z01~ through Z24~.
      Non-standard minutes would be designated using decimal digits 01-59.
*   Renaming the International Date Line to the International Date-Time Line.
*   Defining the IDL to follow  exactly the 180th Meridian with no divergence from North to South Pole.
     Abandon the display of the IDL as a zigzag path to accommodate local ordinances as archaic, confusing and unnecessary.
     Those Sovereign States wishing to alter their relationship to the IDL can do so by adopting the 23rd, 24th or any time zone
       by sovereign law.
*   Transmitting the new ITZ~ChronStamp date-time over the Global Positioning Satellite (GPS) system.
     Such a signal could be received by both personal devices such as wristwatches, pda's, cellular phones and commercial systems.
*   Adopting the ITZ paradigm as an ISO world wide web standard for use on computerized networks.
*   Retiring the archaic bi-directional, plus/minus 1 to 12 hour reference to the Zero Meridian in future publications.
*   Standardizing the use of 15-degree time zone divisions as the default for the boldest lines of longitude on graphical representations of the world.
     Positioning the 24 Zones on world maps with the leading eastern degree defining the beginning of the zone.
     (e.g. Zone
Z13~ would define the longitude range from the zero meridian to the 15th meridian. UTC time would not change.
     Greenwich and London are normally Z13~ and Z13.0+ when Daylight Saving Time is in effect.)
*   Defining as numeric, any computer data field used with time zone values, and restricting the range of values used
       between 01.00 through 24.00.
*   Defining the use of the Plus
+ character to define Daylight Saving Time, and the use of a tilde ~ character to define Standard Time.
     (e.g. Replacement of Eastern Standard Time (EST) with
Z18~ and Eastern Daylight Saving Time (EDST) with Z18+).
*   Defining an alphanumeric data field to be used to track the current status of Daylight Saving Time observance.
     (e.g. A logical field might track a condition or a value like '
Y, 1 or +' for DST, and 'N, zero-0 or ~' for Standard Zone Time)
*   Defining the first  IT-Zone Z01~ as 180-195 degrees west of the IDL
       and the twenty-fourth IT-Zone 24~ to be 165-180 degrees (east of the IDL).
       (The ITZ paradigm can be easily used to calculate mentally (in one's head or on one's fingers ) the time in any zone.)
*   Requiring the use of zone numbers that provide the correct mathematical status whenever a Country or State uses one time zone across
     multiple zones. (e.g. China, India, the former USSR and Kiribati. If the United States decided to use Eastern Standard Time from New York
     to Los Angeles,
Z18~ would be used in place of Z19~ through Z21~.)
*   Defining Local Civil Time by those who wish to continue using advanced minutes by using the following format: INDIA =
Z08.30~)
*   Updating and modifying International Agreements to use the succinct abbreviated designators
Z01~ through Z24~ 
        and 
Z01+ through Z24+ 
 replacing the confusing and often duplicated abbreviations.    (example:EST is used by both the USA and Australia)
     A few examples of abbreviated designators that are meaningless except to local inhabitants are EST, EDST, AZOST, HST, IST and CHST.
*   Only two or three local abbreviations are familiar to the average man on the street; and they provide no help in calculating time globally.
{gold-separator}
The
ITZ~ChronStamp paradigm provides a standardized format for
    event logs, security, telecomm, document and database management systems.

  * Standard time zones are expanded with a decimal & 2-digits 01-59 to advance the minutes of a local time zone.    e.g. "Z08.30~" for India.
  * Each ChronStamp consists of 25 or 28, uniquely positioned, uppercase characters that create an accurate, concise chronological stamp.
  * Fixed character positions provide fast, reliable character extraction, math calculations and unambiguous human comprehension.
  * ITZ~CS is a terse, alphanumeric format that uses the smallest fixed number of characters and
       complies with both Unix and Windows file-paths.
  * Meridians are not Time Zones - they are lines of longitudinal demarcation.
  * Each Time Zone includes 15 degrees of longitude and begins with a specific eastern most meridian in multiples of 15, 30, 45, etc..
  * Historically, the letter "
Z" has represented ZULU, although officially - time at the 0 Prime Meridian is now referenced as UTC or Universal Time Coordinated.

  * Examples of the Standard 25 character format.
     Z01.00~20050829MO~011559~     Z18.00+20050828SU@0915AM+  {Washington,DC: Eastern Daylight Saving Time
     
Z01.00~20050829MO~011559~     Z23.00~20050828SU@0315PM~  {Honolulu, Hawaii: Year-round Standard Time
     
Z01.00~20050829MO~011559~     Z08.30~20050828SU@1845PM~
  {New Delhi, India: 30-minutes ahead of Standard Time
{gold-separator}

Alpha 

Bravo 

Charlie

Delta

Echo

Foxtrot

Golf

Hotel

India

Juliet

Kilo

Lima

Mike

November

Oscar

Papa

Quebec

Romeo

Sierra

Tango

Uniform

Victor

Whiskey

X-ray

Yankee

Zulu

Phonetic Alphabet

ITZ~ChronStamp

INTERNATIONAL TIME ZONES REFERENCE STANDARD TIME ONLY.
Z24 and Z01 are separated by the International Date Line meridian at 180 lon which determines the Date and Time for Z01.