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The Bonavian Civil calendar is a calendar reform proposed by Chris Carrier. Every month begins on a Sunday. Most months have exactly 4 weeks, but January, April, July and October have 5 weeks and also December in a leap year. The 5th week of December (when it occurs) is a leap week.

The Year Edit

The months of the year are as shown here:

1st Quarter
January
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W1 01 02 03 04 05 06 07
W2 08 09 10 11 12 13 14
W3 15 16 17 18 19 20 21
W4 22 23 24 25 26 27 28
W5 29 30 31 32 33 34 35
February
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W6 01 02 03 04 05 06 07
W7 08 09 10 11 12 13 14
W8 15 16 17 18 19 20 21
W9 22 23 24 25 26 27 28
March
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W10 01 02 03 04 05 06 07
W11 08 09 10 11 12 13 14
W12 15 16 17 18 19 20 21
W13 22 23 24 25 26 27 28
2nd Quarter
April
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W14 01 02 03 04 05 06 07
W15 08 09 10 11 12 13 14
W16 15 16 17 18 19 20 21
W17 22 23 24 25 26 27 28
W18 29 30 31 32 33 34 35
May
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W19 01 02 03 04 05 06 07
W20 08 09 10 11 12 13 14
W21 15 16 17 18 19 20 21
W22 22 23 24 25 26 27 28
June
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W23 01 02 03 04 05 06 07
W24 08 09 10 11 12 13 14
W25 15 16 17 18 19 20 21
W26 22 23 24 25 26 27 28
3rd Quarter
July
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W27 01 02 03 04 05 06 07
W28 08 09 10 11 12 13 14
W29 15 16 17 18 19 20 21
W30 22 23 24 25 26 27 28
W31 29 30 31 32 33 34 35
August
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W32 01 02 03 04 05 06 07
W33 08 09 10 11 12 13 14
W34 15 16 17 18 19 20 21
W35 22 23 24 25 26 27 28
September
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W36 01 02 03 04 05 06 07
W37 08 09 10 11 12 13 14
W38 15 16 17 18 19 20 21
W39 22 23 24 25 26 27 28
4th Quarter
October
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W40 01 02 03 04 05 06 07
W41 08 09 10 11 12 13 14
W42 15 16 17 18 19 20 21
W43 22 23 24 25 26 27 28
W44 29 30 31 32 33 34 35
November
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W45 01 02 03 04 05 06 07
W46 08 09 10 11 12 13 14
W47 15 16 17 18 19 20 21
W48 22 23 24 25 26 27 28
December
Week 1 2 3 4 5 6 7
Sun Mon Tue Wed Thu Fri Sat
W49 01 02 03 04 05 06 07
W50 08 09 10 11 12 13 14
W51 15 16 17 18 19 20 21
W52 22 23 24 25 26 27 28
W53 29 30 31 32 33 34 35

Leap Year Rule Edit

The leap years are those whose number when divided by 28 has a remainder of zero, five , 11, 16 or 22. With these leap years the mean year would be 365.25 days, the same as for the Julian Calendar, but there is an exception: those years whose number is divisible by 28*32=896 with a remainder of zero are not leap years. This brings the mean year down to 365.2421875 days.

Epoch Edit

An E-mail from Chris Carrier implies that year 1 began on Julian day number 27 = Sunday 21 December 4714 BC proleptic Gregorian calendar. So year 6721 begins 240*1461-7 weeks later on Sunday 23 December 2007.

External Links Edit

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