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Federal regulations for shelf life dates on perishable goods mandate a year/month/day format, but allow the month to be written in full, in both official languages, or with a set of standardized two-letter bilingual codes such as 2019 AL 09 or 19 AL 09.
[17] The separator used between date values (year, month, week, and day) is the hyphen, while the colon is used as the separator between time values (hours, minutes, and seconds). For example, the 6th day of the 1st month of the year 2009 may be written as "2009-01-06" in the extended format or as "20090106" in the basic format without ambiguity.
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-- The logic of PHP mktime is followed where m or d can be zero to mean-- the previous unit, and -1 is the one before that, etc.-- Positive values carry forward. local date if not (1 <= m and m <= 12) then date = Date (y, 1, 1) if not date then return end date = date + ((m-1).. 'm') y, m = date. year, date. month end local days_hms if not ...
In every cycle there are 71 years with an additional 53rd week (corresponding to the Gregorian years that contain 53 Thursdays). An average year is exactly 52.1775 weeks long; months (1 ⁄ 12 year) average at exactly 4.348125 weeks/month. An ISO week-numbering year (also called ISO year informally) has 52 or 53 full weeks. That is 364 or 371 ...
Standard format: 1- or 2-digit day, the spelled-out month, and 4-digit year (e.g. 4 February 2023) Civilian format: spelled out month, 1-or 2-digit day, a comma, and the 4-digit year (e.g. February 4, 2023). [12] Date Time Group format, used most often in operation orders. This format uses DDHHMMZMONYY, with DD being the two-digit day, HHMM ...
The calendar that is used for Date format. The order in which the year, month, and day are represented. (Year-month-day, day-month-year, and month-day-year are the common combinations.) How weeks are identified (see seven-day week) Whether written months are identified by name, by number (1–12), or by Roman numeral (I-XII).
Date and time notation around the world varies.. An approach to harmonize 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.