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The Symmetry454 calendar (Sym454) is a proposal for calendar reform created by Irv Bromberg of the University of Toronto, Canada. 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.
The Symmetry454 calendar (Sym454) is a proposal for calendar reform created by Irv Bromberg of the University of Toronto, Canada. It is a perennial solar...
inserts an extra year-end month of seven days called "Xtra", and the Symmetry454 calendar (circa 2004) lengthens the month of December by one week on...
shared by all. Some calendar reform ideas, such as the Pax Calendar, Symmetry454 calendar and the Hanke–Henry Permanent Calendar, were created to solve...
Runic calendar Solar Hijri calendar Soviet calendar Swedish calendar Symmetry454 Tamil calendar Thai solar calendar Tulu calendar World Calendar World...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Examples include: Proleptic Gregorian calendar Proleptic Julian calendar Symmetry454 This disambiguation page lists articles associated with the title Proleptic...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
World Calendar World Season Calendar Leap week calendars Pax Calendar Symmetry454 Hanke–Henry Permanent Calendar Christianity portal Calendar (New Style)...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...
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