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Mission control center's board with time data, displaying coordinated universal time with ordinal date (without year) prepended, on October 22, 2013 (i.e.2013-295). An ordinal date is a calendar date typically consisting of a year and an ordinal number, ranging between 1 and 366 (starting on January 1), representing the multiples of a day, called day of the year or ordinal day number (also ...
This template may also be used to generate the ordinal date for any Gregorian calendar dates by passing the proper syntax to the following variables: year: Any integer, as well as numeric formulas, calculations work for years in the common era and in the pre-Christian era starting at year -4800 (4801 BC). month: A positive integer from 1 ...
The Julian date (JD) of any instant is the Julian day number plus the fraction of a day since the preceding noon in Universal Time. Julian dates are expressed as a Julian day number with a decimal fraction added. [8] For example, the Julian Date for 00:30:00.0 UT January 1, 2013, is 2 456 293.520 833. [9]
Julian dates: 2451545.0; Excel serial dates: 36526.5; As many decimal places may be used as required for precision, so 0.5 d = 0.500000 d. Fractional days are often calculated in UTC or TT, although Julian Dates use pre-1925 astronomical date/time (each date began at noon = ".0") and Microsoft Excel uses the local time zone of the computer ...
This template returns the date (month name and day of month) from a day number in a year. Syntax: {{Date from ordinal|day of year}} {{Date from ordinal|day of year|year}} {{Date from ordinal|day of year|leapyear=isleap}} The year parameter is optional. If specified the date serial is handled for that specific year (leapyear is then ignored).
The result is the ordinal date, which can be converted into a calendar date. If the ordinal date thus obtained is zero or negative, the date belongs to the previous calendar year; if it is greater than the number of days in the year, it belongs to the following year. Formula
Or, like a Julian day, does an ordinal date begin at noon, so: At midnight when January 1 begins, the ordinal date is -0.5; At noon on January 1, the ordinal date is 1.0; At midnight when January 2 begins, the ordinal date is 1.5; This question relates to the formulas in declination#Sun, where the value of 'N' is defined ambiguously as "the ...
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