This page contains the description of the following commands year-day-number,
The year-day-number function takes as argument a date and returns the number of the day in the year, starting at one. Example
[Endymion] (year-day-number #:date:#[2005 01 01 22 03 58]) 1 [Endymion] (year-day-number #:date:#[2005 12 31 22 03 58]) 365 [Endymion] (year-day-number #:date:#[2004 12 31 22 03 58]) 366 [Endymion] (year-day-number 0) year-day-number : argument is not a date : 0
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