ITZ~ChronStamps
... have been submitted to the ISO-8601 Standards
Committee.

Although the ITZ~ChronStamp is available as open-source, the
concept and software are Copyright 2003-2010 by eVECTORY enterprises,
all rights reserved.
View How to Perform Continuous CPR !
|
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 |
INTERNATIONAL TIME ZONES REFERENCE STANDARD TIME ONLY
Date & Time on the International Date Line is where the New World Day
begins on the 180º Meridian. The IDL also defines the date and time
for the First Time Zone Z01 [180ºE to 165ºE Lon] near Tuvalu-Funafuti.
Java Clocks below track Local Computer Clock. Do they match NIST Clock above?.
The TILDE ~ sign now indicates STANDARD TIME. The PLUS + sign indicates ADVANCED TIME (Daylight
/ Summer).
Your Local PC
Date-Time
Press [Ctrl+F] for City
Search.
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 Graphic below is being redesigned.
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Z24 and Z01 are separated by the International Date Line meridian at 180º Longitude which 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; Cabaña;
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 Aaiún; Monrovia; Porto; Bamako; Rabat;
Tórshavn;
Tanger; Yamoussoukro; Glasgow; Abidjan; Edinburgh; Cardiff;
Liverpool; Birmingham (UK); Ouagadougou; Accra; Lome; São
Tomé;
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 180º Longitude which determines the Date and Time for Z01.
Visit two of our favorites: Time an Date.com,
The
United States Naval Observatory and NIST clock.
The NIST web site also has information on how to correct
Windows/XP clock issues.
The following graphic can be used as a
desktop background and looks nice using a 'navy blue' background
color.
ITZ~ChronStamp... Documentation
and Information
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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 22 or 25 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 22 or 25 uniquely
positioned, uppercase characters that create an accurate chronological
stamp.
* Non-Standard (local ordinance defined) time is
accommodated by adding decimal digits 01-59 to advance the minutes of a Standard
Zone.
* Each International Time Zone includes 15º degrees
of longitude of the total 360º referred to as 0-180 West
and 0-180 East from the 0º prime
meridian.
* Each ITZ begins with a specific most Eastern
meridian. Heading West, they are: 0ºW, 15ºW, 30ºW, 45ºW, etc..
Heading Eastward they
begin with 15º E, 30ºE, 45ºE, etc..
* Longitudes 180º and 0º 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 0º.
Note: UTC and Zulu are 12-hours behind
the New World Day which begins at the International Date Line or
180º.
* Any date-time stamp without a reference
to ITZ or UTC is historically incomplete unless a geographical reference is
included.
Examples of the Standard 22 character format and a
Non-standard 25 character format that accommodates advanced
minutes:
Z01~20050829MO@011559~ Z18+20050828SU@0915AM+ Washington,DC: Eastern Daylight Saving Time
Z01~20050829MO@011559~ Z23~20050828SU@0315PM~ Honolulu, Hawaii: Year-round Standard
Time
Z01~20050829MO@011559~ Z08.30~20050828SU@1845PM~ 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 180º
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 E165º
to 180º and the last zone, Z24 includes W165º to
180º.
* The date and time
for all 15º of an ITZone is the same as the most eastern
boundary of the ITZone.
* Each ITZone includes 15-degrees of longitude,
where 15º X 24 Zones = a full Circle of 360º 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 180º degrees
and separates the last Zone-24 and first Zone-01.
* The Greenwich Meridian is located at 0º
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+ same time as
Z20~
Eastern Daylight Saving
Time zone (EDST/EDT) is represented by Z18+ same
time as Z17~
Central
European Summer Time zone (CEST) is represented
by Z12+ equivalent to
Z11~
INDIA's
Non-Standard Time zone (NTZ) is
represented by Z08.30~ DST is not observed
The
ITZ~ChronStamp Descriptors
The first zone Z01~ begins on the West side of the
International Date Line Time or IDLT.
The thirteenth zone Z13~ begins on the
West side of the Greenwich Prime 0º Meridian.
and the last zone Z24~ completes the 360-degree globe on the East side
of the IDLT.
Explanation
An
ITZ~ChronStamp references Standard Time at Zone Z01~ at the International
Date-Time Line (180º meridian)
UTC references Standard Time at Zone Z13~
commonly referred to as UTC, Zulu or GMT at the 0º Prime meridian.
When parsing text, a
character string beginning with a 'Z' that ends with a ~ or + is
a ChronStamp candidate.
The second step is verification of total
character count (22 or 25) and valid component strings.
Char-Positions for Standard Time
Z [C1] The letter Z begins a ChronStamp string.
01/24 [C2-C3] The majority of ITZ strings will be 22 characters.
The vast majority of the world references Standard
Hours & Minutes;
Char-Positions Shift to the right 3-positions when NON-Standard Time is observed.
01.00/24.00 [C2--C6] A decimal character in position [C4] indicates a 25-character string is used.
Decimal Digits (01-59) Are Required when NON-Standard Minutes
are used.
~ + or .
[C4] The ~ character indicates Standard Time. The +
character indicates Advanced
Time.
20090101 [C5--C12] Year Month Date in ISO-8601 Standard is a condensed format
yyyymmdd
MO
[C13-C14] Day of the Week uses (2) characters to improve recognition by humans.
@ [C15] The 'AT' sign character separates
day & time to prevent 'Ooh'
and Zero confusion.
It is also used as a verbal prefix in English. i.e. "Meet me on MOnday @ 9AM",.
000100 [C16--C19] 24-Hour Time in ISO-8601 Standard's condensed format 0h0m with leading
zeros OR
00-59 AM/PM [C20--C21] Optional Seconds or AM/PM characters; even though time is always in the 24-hour format.
~ or + [C22 or C25] 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
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 0º-
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 new International Time Zone standards even thouth 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. Back 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 center of
the earth based. Later in 1879, he also proposed a universal day that would
begin at the 180º
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.
Coordination of events can be
scheduled to fractions of a second, but just not on the right 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 means 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 official timekeeper.
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) is reached or stepped – 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.
FlexComm.com maintains
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 (NXx’s), 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 shows a CDR for Stephen (SDC) in Atlanta
calling John (JDA) in San Francisco.
By default, the 'stop' descriptor uses
the Originators time - reducing the number of steps required to calculate
the total length (holding time)
and report on the call or data connection.
Z01~20050117MO@033800~START; Z18~20050116SU@1038AM~SDC;
Z21~20050116SU@0738AM~JDA;
Z18~20050116SU@104500~STOP;
In a typical pbx record,
a person's phone number or other identification number might be included.
Either
way, each CDR must include enough information in order to merge the
individual CD-Records
into a vectory of eVEnts. A typical
CDR includes considerably more information in many different formats.
For instance, a pbx manufacturer would include additional data
positioned for their purposes in-between the
Time Zone Descriptors - e.g.
route numberss, trunk numberss, departmental info-accounting codes; while a
transferred connection typically involves two or more CDR's. Whereas a single continuous connection typically
requires only one CDR.
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 and subsequently provide sophisticated query reports.
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
World
Clock Time Zones www.TimeandDate.com
Current Date
and Time for International Date Time or ITZ~ChronStamp at Z01~
United States Naval Observatory, Washington, D.C.

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 180º 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~ 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 180-165ºE degrees and
Z24~ is the last zone East
of the IDLT at 165ºW-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.
![]()
The ITZ~ChronStamp paradigm provides a standardized format for
event logs, security,
telecomm, document and database management systems.
* Non-Standard time zones may
be expanded with a decimal & digits 01-59 to advance the minutes of a
local time zone.
e.g. "Z08.30~"
for India.
* Each ChronStamp
consists of 22 or 25, 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 15º
degrees of longitude and begins with a specific eastern most meridian in
multiples of 15º, 30º, 45º, etc..
*
The time honored use of the letter "Z" to
represent Zulu time is used globally, although officially - time at the 0º Prime
Meridian
is
referred to as Universal Time Coordinated or simply UTC.
*
Examples of the Standard 22
character format and a Non-standard 25 character format that accommodates
advanced minutes:
Z01~20050829MO~011559~
Z18+20050828SU@0915AM+ {Washington,DC: Eastern Daylight Saving Time
Z01~20050829MO~011559~
Z23~20050828SU@0315PM~ {Honolulu, Hawaii: Year-round Standard
Time
Z01~20050829MO~011559~ Z08.30~20050828SU@1845PM~ {New Delhi, India: 30-minutes ahead of Standard
Time ![]()
The ITZ~ChronStamp name, logo, graphics and paradigm are
Copyright 2003-2010 by
eVectory Enterprises and The NBS~Group, All Rights
Reserved.
Contact
Us email: Support@FCCSS.NET
404.856.9427 main: +1.770.395.6500
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copyrighted property of their respective companies.