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Template:Gregorian serial date
From LISWiki
{{#expr:
+ ((2019 - 1) * 365)
+ (((2019 - 1) - ((2019 - 1) mod 4)) / 4)
- (((2019 - 1) - ((2019 - 1) mod 100)) / 100)
+ (((2019 - 1) - ((2019 - 1) mod 400)) / 400)
+ {{ #ifexpr:
(03 - 1) < 8
| ( (03 - 1) * 30.5 round 0)
| ( (03 - 1) * 30.5 + 0.9 round 0 )
}}
- {{ #ifexpr: (03 <= 2) | 0 |
{{ #ifexpr:
(2019 / 4) = (2019 / 4 round 0)
and (2019 / 100 != 2019 / 100 round 0)
| 1 | 2
}}
}}
+ {{ #ifexpr: (03 <= 2) | 0 |
{{ #ifexpr:
(2019 / 400) = (2019 / 400 round 0)
| 1 | 0
}}
}}
+ 13
}}{{#ifexpr: 2019 < 1 |
_ERROR - Can not handle dates before January 1, 1 A.D.
}}Template:Documentation
