Template:Gsdnt

739245

{{gsdnt|year=1|month=1|day=1}} gives 1
{{gsdnt|year=1970|month=1|day=1}} gives 719163
{{gsdnt|year=2000|month=12|day=31}} gives 730485 (5 times the number of days of a cycle, 146,097)
{{gsdnt|year=2001|month=1|day=1}} gives 730486
{{gsdnt|year=2001|month=2|day=28}} gives 730544
{{gsdnt|year=2001|month=3|day=1}} gives 730545

This template gives the Gregorian serial day. This is the numbers of days since 0 A.D. This template should handle all leap year exceptions including the 100 and 400 year rule. By default this template gives the serial for today. To find the serial for another date fill in the date into this code: {{Gregorian serial date | year = | month = | day = }}. The result is MJD + 678576 after 200 AD.

Copied from w:Template:Gregorian serial date

Tested at Template:date demo.