Template:Gregorian serial date

This template gives the Gregorian serial day. This is the numbers of days from the start of 1 A.D. (Monday, 1 Jan 1 = 1). (In the Gregorian Calendar there is no year 0) 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|month = |day = |year = }}

Today's date is 739213.

{{gsd|year=1|month=1|day=1}} gives 1
{{gsd|year=2000|month=12|day=31}} gives 730485 (5 times the number of days of a cycle, 146,097)
{{gsd|year=1985|month=1|day=1}} gives 724642
{{gsd|year=1985|month=4|day=12}} gives 724743
{{gsd|year=1981|month=8|day=12}} gives 723404
{{gsd|year=1953|month=10|day=2}} gives 713228

Use with caution on in-universe pages

Please note that this template, and really everything in category:age calculation templates should be used with caution on in-universe pages. They all assume that there is no year zero, which our in-universe rule on years does not. This is because there are several in-universe sources, not the least of which is the 1996 movie and its novelisation, which assume that there is a year zero. For ease of calculation, our in-universe time calculation templates, like {{timeline}}, are therefore based on a different principle than this one — namely, that year 0 does exist.

In practice, this means absolutely nothing to the calculation time of between two dates, so long as you're trying to figure out the distance between any two dates after 1/1/1 AD.