Hanke–Henry Permanent Calendar
Proposal for calendar reform / From Wikipedia, the free encyclopedia
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"Common Civil Calendar & Time" redirects here. For the civil calendar in common use, see Gregorian calendar.
The Hanke–Henry Permanent Calendar (HHPC) is a proposal for calendar reform. It is one of many examples of leap week calendars, calendars that maintain synchronization with the solar year by intercalating entire weeks rather than single days. It is a modification of a previous proposal, Common-Civil-Calendar-and-Time (CCC&T). With the Hanke–Henry Permanent Calendar, every calendar date always falls on the same day of the week. A major feature of the calendar system is the abolition of time zones.[1][2][3]