bn:00550279n
Noun Named Entity
Categories: Leap week calendars, 2005 introductions, Specific calendars, Articles with short description, Proposed calendars
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Symmetry454  Sym454  Sym454 Calendar  Sym 454  Sym 454 Calendar
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The Symmetry454 Calendar is a proposal for calendar reform created by Irv Bromberg of the University of Toronto, Canada. Wikipedia
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EN
The Symmetry454 Calendar is a proposal for calendar reform created by Irv Bromberg of the University of Toronto, Canada. Wikipedia
Calendar with mean year =365+71/293 days Wikidata
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