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Date and time notation around the world varies.
An approach to harmonise the different notations is the ISO 8601 standard.
Since the Internet is a main enabler of communication between people with different date notation backgrounds, and software is used to facilitate the communication, RFC standards and a W3C tips and discussion paper were published.
RFC 822 "Standard for the Format of Arpa Internet Text Messages"
published 1982-08-13
e.g. used for email
format: [day ,] 20 Jun 82 14:01:17
RFC 2445 "Internet Calendaring and Scheduling Core Object Specification"
format: 19960401T235959Z
RFC 3339 "Date and Time on the Internet: Timestamps"
published July 2002
intended use: new internet protocols
format: 1982-06-20
W3C: "Use international date format (ISO)"
and 30 Related for: Date and time notation information
Dateandtimenotation around the world varies. An approach to harmonise the different notations is the ISO 8601 standard. Since the Internet is a main...
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datenotation follows the DD/MM/YYYY format. Timenotation depends on the level of formality and varies in written and spoken formats. Official time is...
Philippines has not officially adopted any timeanddate representation standard based on the ISO 8601. Notation practices across the country are in various...
Dateandtimenotation in Italy records the date using the day–month–year format (27 aprile 2024 or 27/4/2024). The time is written using the 24-hour clock...
MM.YYYY format is used with dot as a separator. 24-hour timenotation is used officially and for purposes that require precision like announcements in...
[better source needed] The first day of the week in France is Monday. The 24-hour notation is used in writing with an h as a separator (h for heure, meaning hour)...
elsewhere in Europe and many other countries. Either dashes or slashes are used as separators. Times are written using 24-hour notation. dd-mm-yyyy (10-09-2000)...
March 15 and "(o) dia quinze do mês que vem"="(the) day fifteen of next month" is used for May 15. The 24-hour notation is always used in formal and informal...
Nepal uses both the DMY and YMD format when writing dates, and uses 12-hour format for time. YYYY-MM-DD is official date format for the Bikram Sambat calendar...
and long dates as day month name year from right to left, for example ۱۶ مرداد ۱۳۸۹. Both two-digit and four-digit years are valid but months and days...
transport, at airports and in the Irish Defence Forces. Time in Ireland Dateandtimenotation in the United Kingdom "Genealogical and Historical Research...
восьмої", literally “half of the eighth” means 7:30, not 8:30. v t e DateAndTimeNotation In Ukraine Archived 2021-01-11 at the Wayback Machine v t e...
12.91). The 12-hour notation is used in verbal communication, but the 24-hour format is also used along with the 12-hour notation in writing. The minutes...
expressing the full dateand/or time in South Korea is to suffix each of the year, month, day, ante/post-meridiem indicator, hour, minute and second (in this...
the year is omitted altogether. The Roman notation still prevails in private communication, except for date stamps where Arabic numerals are used (as...
several forms for dateandtimenotation in Colombia. In Colombia, the standard dd/mm/yyyy is widely used: 31/12/2008 Also long date format is used, example:...
as on labels and in computer notation. The week begins with a Monday and week 1 is the week containing the year's first Thursday. Time in Finland often...
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