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Symmetry454
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (July 2015) |
The Symmetry454 calendar (Sym454) is a proposal for calendar reform created by Irv Bromberg of the University of Toronto, Canada.[when?] It is a perennial solar calendar that conserves the traditional month pattern and 7-day week, has symmetrical equal quarters in 82% of the years in its 293-year cycle, and starts every month on Monday.
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