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The '''Hanke-Henry Permanent Calendar''' is a proposal for [[calendar reform]]. It is one of many examples of [[leap week calendar]]s, [[calendar]]s which maintain synchronization with the [[solar year]] by [[Intercalation (timekeeping)|intercalating]] entire weeks rather than single days. It is a modification of a previous proposal, Common-Civil-Calendar-and-Time. With the Hanke-Henry Permanent Calendar, every calendar date always falls on the same day of the week. |
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The '''Hanke-Henry Permanent Calendar''' is a proposal for [[calendar reform]]. It is one of many examples of [[leap week calendar]]s, [[calendar]]s which maintain synchronization with the [[solar year]] by [[Intercalation (timekeeping)|intercalating]] entire weeks rather than single days. It is a modification of a previous proposal, Common-Civil-Calendar-and-Time. With the Hanke-Henry Permanent Calendar, every calendar date always falls on the same day of the week. |
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== Features == |
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== Features == |
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[[File:HHCalendar.png|Hanke-Henry Permanent Calendar Proposal|thumb]]While many [[calendar reform]]s aim to make the calendar more accurate, the Hanke-Henry Permanent Calendar focuses on making the calendar [[Perennial calendar|perennial]], so that every date falls on the same day of the week, year after year.<ref name=jhu.edu/> The familiar drift of weekdays with respect to dates results from the fact that the number of days in a physical year (one full orbit of earth around the sun, approximately 365.24 days) is not a multiple of seven. By reducing common years to 364 days (52 weeks), and adding an extra week every five or six years, The Hanke-Henry Permanent Calendar eliminates weekday drift and synchronizes the calendar year with the seasonal change as the Earth circles the Sun. The extra week, or "mini-month", known as "Xtr (or Extra)",<ref name=jhu.edu/> occurs every year that either begins or ends in a Thursday on the corresponding Gregorian calendar,<ref name=jhu.edu/> and falls between the end of December and the beginning of January. Thus, each year always begins between December 28 and January 3 in the Gregorian calendar.there would be no holloween |
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[[File:HHCalendar.png|Hanke-Henry Permanent Calendar Proposal|thumb]]While many [[calendar reform]]s aim to make the calendar more accurate, the Hanke-Henry Permanent Calendar focuses on making the calendar [[Perennial calendar|perennial]], so that every date falls on the same day of the week, year after year.<ref name=jhu.edu/> The familiar drift of weekdays with respect to dates results from the fact that the number of days in a physical year (one full orbit of earth around the sun, approximately 365.24 days) is not a multiple of seven. By reducing common years to 364 days (52 weeks), and adding an extra week every five or six years, The Hanke-Henry Permanent Calendar eliminates weekday drift and synchronizes the calendar year with the seasonal change as the Earth circles the Sun. The extra week, or "mini-month", known as "Xtr (or Extra)",<ref name=jhu.edu/> occurs every year that either begins or ends in a Thursday on the corresponding Gregorian calendar,<ref name=jhu.edu/> and falls between the end of December and the beginning of January. Thus, each year always begins between December 28 and January 3 in the Gregorian calendar.there would be no holloween. Hank was here Peace out dudes! |
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Under the Hanke-Henry Permanent Calendar January, February, April, May, July, August, October and November have thirty days, while March, June, September, and December have thirty-one, so that each quarter contains two 30 day months followed by one month of 31 days. While the Hanke-Henry Permanent Calendar changes the length of the months, the week and days remain the same.<ref name=overhaul/> As part of the calendar proposal, time zones would be eliminated and replaced with UTC. |
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Under the Hanke-Henry Permanent Calendar January, February, April, May, July, August, October and November have thirty days, while March, June, September, and December have thirty-one, so that each quarter contains two 30 day months followed by one month of 31 days. While the Hanke-Henry Permanent Calendar changes the length of the months, the week and days remain the same.<ref name=overhaul/> As part of the calendar proposal, time zones would be eliminated and replaced with UTC. |
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