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29. Februar | umweltnetz.ch

Schalttage-Kalender-Spielereien

Fast alle vier Jahre kommt der 29. Februar im Kalender vor – dies hat einige spielerische Auswirkungen auf den Kalender. Der Form halber: dieser Beitrag bezieht sich auf die Schalttage vom 29. Februar 1904 bis zum 29. Februar 2096.

„Schalttage-Kalender-Spielereien“ weiterlesen