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The Weekend Rest Calendar is inspired by a tear-off calendar that normally displays one day per page but puts both weekend days on the same page. Such a calendar has 'dates' that consist of either one weekday or a whole weekend. Then we can have 12 months each of 26 'dates', except the last month, which has 27 'dates' in a common year and 28 'dates' in a leap year. Then leap years need occur only once every 15 or 16 years, because a common year starting on Saturday has 53 weekends and so 366 days.

The calendar has leap years occurring in intervals of 11 or 17 years, so that every leap year begins on a Wednesday. This ensures that every leap year has 366 days (never 367 days) and is not next to another year of 366 days.

The calendar uses the simplest accurate such cycle, which is the 62-year cycle with 4 leap years (17+17+17+11) and the Rata Die epoch of Monday 1 January 1 CE in the Proleptic Gregorian calendar. Leap years occur on the 3rd, 20th, 37th and 54th years of the 62-year cycle, so that the years of the 62-year cycle begin thus:

Day of the week of the first day of the year in a 62-year leap cycle
Mo Tu We Th Fr Sa
01 02 03 -- 04 05
06 07 08 09 10 11
12 13 14 15 16 17
18 19 20 -- 21 22
23 24 25 26 27 28
29 30 31 32 33 34
35 36 37 -- 38 39
40 41 42 43 44 45
46 47 48 49 50 51
52 53 54 -- 55 56
57 58 59 60 61 62

The year 2020 is the 36th year of a 62-year cycle (2020 - (32*62) = 36) and begins on a Tuesday and therefore on Tuesday 31 December 2019. 

The calendar is called the Weekend Rest Calendar, because the calendar rests during a weekend. The day of the week name (Saturday or Sunday) must be included in a date to name a weekend day, but is optional of other days.

This calendar was suggested by Karl Palmen in 2020.

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