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Secular perpetual calendar

[[Franck Muller Aeternitas 4]]\\ with **secular perpetual calendar** (click to enlarge!)
Franck Muller Aeternitas 4
with secular perpetual calendar
© Franck Muller

Calendar function

Rare variant of the perpetual calendar, which also takes into account the long-term exclusion rules for determining the leap years partially

  • 100s rule = 1900, 2100, 2200, … are no leap years, or even completely
  • 400s rule = 2000, 2400, … again are leap years.
secular_perpetual_calendar.txt · Last modified: 03.07.2022 15:37 by

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