Redigerer Mal:Gregorian serial date

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This template gives the [[Gregorian calendar|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: <nowiki>{{Gregorian serial date|month = |day = |year = }}</nowiki>

'''Today's Date is'''
</noinclude>{{#expr: 
        <!--Days from all years past:-->

        + (({{{year|{{CURRENTYEAR}}}}} - 1) * 365)
        + ((({{{year|{{CURRENTYEAR}}}}} - 1) - (({{{year|{{CURRENTYEAR}}}}} - 1) mod 4)) / 4)     <!--add a day for every leap-->
        - ((({{{year|{{CURRENTYEAR}}}}} - 1) - (({{{year|{{CURRENTYEAR}}}}} - 1) mod 100)) / 100) <!--subtract 100 year exception-->
        + ((({{{year|{{CURRENTYEAR}}}}} - 1) - (({{{year|{{CURRENTYEAR}}}}} - 1) mod 400)) / 400) <!--readd 400 year exception-->

       <!--Days so far this year:-->
 
        + {{ #ifexpr:    <!--add days for past months this year--> <!--Gives 1 or 2 extra days because of February-->
                     ({{{month|{{CURRENTMONTH}}}}} - 1) < 8 
                     | ( ({{{month|{{CURRENTMONTH}}}}} - 1) * 30.5 round 0) 
                     | ( ({{{month|{{CURRENTMONTH}}}}} - 1) * 30.5 + 0.9 round 0 ) 
          }} 
        - {{ #ifexpr: ({{{month|{{CURRENTMONTH}}}}} <= 2) | 0 |  
             {{ #ifexpr:    <!-- if leap year  -->
                     ({{{year|{{CURRENTYEAR}}}}} / 4) = ({{{year|{{CURRENTYEAR}}}}} / 4 round 0)          <!--If divisible by 4-->
                      and ({{{year|{{CURRENTYEAR}}}}} / 100 != {{{year|{{CURRENTYEAR}}}}} / 100 round 0)  <!--and not by 100-->
                | 1 | 2 
             }}
          }}
        + {{ #ifexpr: ({{{month|{{CURRENTMONTH}}}}} <= 2) | 0 |
             {{ #ifexpr: <!--400 year exception-->
                     ({{{year|{{CURRENTYEAR}}}}} / 400) = ({{{year|{{CURRENTYEAR}}}}} / 400 round 0) 
                | 1 | 0 
             }}
          }} 
        + {{{day|{{CURRENTDAY}}}}}
 }}{{#ifexpr: {{{year|{{CURRENTYEAR}}}}} < 1 |
        _ERROR - Can not handle dates before January 1, 1 A.D.
   }}<noinclude>



*<nowiki>{{gsd|year=1|month=1|day=1}}</nowiki> gives {{gsd|year=1|month=1|day=1}}
*<nowiki>{{gsd|year=2000|month=12|day=31}}</nowiki> gives {{gsd|year=2000|month=12|day=31}} (5 times the number of days of a cycle, 146,097)
*<nowiki>{{gsd|year=2000|month=1|day=1}}</nowiki> gives {{gsd|year=2000|month=1|day=1}}
*<nowiki>{{gsd|year=2001|month=1|day=1}}</nowiki> gives {{gsd|year=2001|month=1|day=1}}
*<nowiki>{{gsd|year=2001|month=2|day=28}}</nowiki> gives {{gsd|year=2001|month=2|day=28}}
*<nowiki>{{gsd|year=2001|month=3|day=1}}</nowiki> gives {{gsd|year=2001|month=3|day=1}}

See also:
*{{tiw|JULIANDAY}}
*{{tim|gsd}}
*{{tim|YMD2MJD}}
[[Kategori:Datomaler|Gregorian serial date]]


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