hey i was wondering what is the equation to get the julian day number like if jan 1 is 1 and feb 1 is 32 of a julian day what would be an equation in doing so? given the month and date how would i find the julian day number of lets day dec 26?
Twelve answers:
modulo_function
2011-10-13 11:18:50 UTC
That depends on whether or not it's a leap year.
There might be an easier way but I'd a 2-d arrray: [12][1]
where each row is a month and the column is the number of days in that month.
If you ask for the Julian day for Dec 26 then you'd add the lengths of all the months Jan through Nov, then add 26 to get Dec 26.
Do the correction for leap years separately.
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Equation to get julian day number?
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The Julian Day of the current moment is the number of days since noon (GMT), January 1st, 4713 BC.
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