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  2. Date and time notation in the Philippines - Wikipedia

    en.wikipedia.org/wiki/Date_and_time_notation_in...

    ) are almost exclusively used for expiration dates that are normally written in the alphanumeric day-month-year format. On the other hand, an alphanumeric date in month-day-year format instead uses spacing and a comma between the day and year. The day-month-year variant likewise does not necessarily require a comma between the month and year.

  3. List of date formats by country - Wikipedia

    en.wikipedia.org/wiki/List_of_date_formats_by...

    Basic components of a calendar date for the most common calendar systems: D – day; M – month; Y – year; Specific formats for the basic components: yy – two-digit year, e.g. 24; yyyy – four-digit year, e.g. 2024; m – one-digit month for months below 10, e.g. 3; mm – two-digit month, e.g. 03; mmm – three-letter abbreviation for ...

  4. Gregorian calendar - Wikipedia

    en.wikipedia.org/wiki/Gregorian_calendar

    Calendar cycles repeat completely every 400 years, which equals 146,097 days. [e] [f] Of these 400 years, 303 are regular years of 365 days and 97 are leap years of 366 days. A mean calendar year is ⁠365 + 97 / 400 ⁠ days = 365.2425 days, or 365 days, 5 hours, 49 minutes and 12 seconds. [g]

  5. Conversion between Julian and Gregorian calendars - Wikipedia

    en.wikipedia.org/wiki/Conversion_between_Julian...

    Within these tables, January 1 is always the first day of the year. The Gregorian calendar did not exist before October 15, 1582. Gregorian dates before that are proleptic, that is, using the Gregorian rules to reckon backward from October 15, 1582. Years are given in astronomical year numbering.

  6. List of almanacs - Wikipedia

    en.wikipedia.org/wiki/List_of_almanacs

    Old Farmer's Almanac (1792–present) Schott's Almanac; A Sound Word Almanac (2023) [3] TIME Almanac with Information Please, formerly Information Please Almanac (1947–2013) Wall Street Journal Almanac (1998 [4] and 1999 [5]) Whitaker's Almanack (1868–present) The World Almanac and Book of Facts (1868–1876, 1886–present) Almanaque Abril ...

  7. Almanac - Wikipedia

    en.wikipedia.org/wiki/Almanac

    The almanac was the first in a series of such publications that Stephen Daye, or Day, printed each year until 1649 in Cambridge, Massachusetts. [22] The Cambridge/ Boston area in Massachusetts soon became the first center in the colonies for the annual publication of almanacs, [ 23 ] to be followed by Philadelphia during the first half of the ...

  8. Philippine Standard Time - Wikipedia

    en.wikipedia.org/wiki/Philippine_Standard_Time

    For 323 years, 9 months, and 4 days, [note 1] which lasted from Saturday, March 16, 1521 (Julian Calendar), until Monday, December 30, 1844 (Gregorian Calendar), the Philippines followed the date of the western hemisphere and had the same date as Mexico. This was because it was a Spanish colony supplied and controlled via Mexico until Mexico's ...

  9. September 12 - Wikipedia

    en.wikipedia.org/wiki/September_12

    September 12 is the 255th day of the year (256th in leap years) in the Gregorian calendar; ... 1969 – Philippine Air Lines Flight 158 crashes in Antipolo, ...