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...

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...

above chart, fiscal years 2028 and 2033 have 53 weeks. Accounting period Symmetry454 "26 C.F.R. § 1.441-2". JUSTIA. "IRS Publication 538, Accounting Periods...

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...

and the Hanke–Henry Permanent Calendar, contain a 30-day February. The Symmetry454 calendar assigns 35 days to February, May, August, and November, as well...

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...

Reform proposals Hanke–Henry Permanent International Fixed Pax Positivist Symmetry454 World Displays and applications Electronic Perpetual Wall Year naming...

Pax Calendar and Hanke–Henry Permanent Calendar § Disadvantages and Symmetry454 § Leap rule. The best comparable rule to Gregorian "every fourth year...

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...