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'''Perpetual calendar''' | '''Perpetual calendar''' | ||
| − | {{other languages|[[Ewiger Kalender| | + | {{other languages|[[Ewiger Kalender|de]]|[[Quantieme perpetual|fr]]|[[x|nl]]|[[Вечный календарь|ru]]}} |
[[Bild:Langematik-Perpetual Platin.jpg|thumb|[[Langematik-Perpetual]]<br>with Perpetual calendar]] | [[Bild:Langematik-Perpetual Platin.jpg|thumb|[[Langematik-Perpetual]]<br>with Perpetual calendar]] | ||
A perpetual calendar keeps track of the date, the day of the week, the month, the year, including leap years, and sometimes even the century. Because of the complex rules of the Gregorian calendar, which include varying lengths of months and leap years every four years, a perpetual calendar is an extraordinary exercise in the design and manufacture of this [[complication]]. | A perpetual calendar keeps track of the date, the day of the week, the month, the year, including leap years, and sometimes even the century. Because of the complex rules of the Gregorian calendar, which include varying lengths of months and leap years every four years, a perpetual calendar is an extraordinary exercise in the design and manufacture of this [[complication]]. | ||
[[Category:Glossary]] | [[Category:Glossary]] | ||
Version vom 1. Februar 2009, 23:47 Uhr
Perpetual calendar
| other languages: de fr nl ru |
A perpetual calendar keeps track of the date, the day of the week, the month, the year, including leap years, and sometimes even the century. Because of the complex rules of the Gregorian calendar, which include varying lengths of months and leap years every four years, a perpetual calendar is an extraordinary exercise in the design and manufacture of this complication.