Leap year starting on Sunday

This is the calendar for any leap year starting on Sunday, January 1 (dominical letter AG), such as 1956, 1984, 2012, 2040, or 2068.[1]

This is the only leap year with three occurrences of Friday the 13th (common years starting on Thursdays share this distinguishing feature). Each instance of Friday the 13th is three months apart in January, April, and July. Uniquely, these instances are also 13 weeks apart from one another.

January
Su Mo Tu We Th Fr Sa
01020304050607
08091011121314
15161718192021
22232425262728
293031  
 
February
Su Mo Tu We Th Fr Sa
01020304
05060708091011
12131415161718
19202122232425
26272829  
 
March
Su Mo Tu We Th Fr Sa
010203
04050607080910
11121314151617
18192021222324
25262728293031
 
April
Su Mo Tu We Th Fr Sa
01020304050607
08091011121314
15161718192021
22232425262728
2930  
 
May
Su Mo Tu We Th Fr Sa
0102030405
06070809101112
13141516171819
20212223242526
2728293031  
 
June
Su Mo Tu We Th Fr Sa
0102
03040506070809
10111213141516
17181920212223
24252627282930
 
July
Su Mo Tu We Th Fr Sa
01020304050607
08091011121314
15161718192021
22232425262728
293031  
 
August
Su Mo Tu We Th Fr Sa
01020304
05060708091011
12131415161718
19202122232425
262728293031  
 
September
Su Mo Tu We Th Fr Sa
01
02030405060708
09101112131415
16171819202122
23242526272829
30  
October
Su Mo Tu We Th Fr Sa
010203040506
07080910111213
14151617181920
21222324252627
28293031  
 
November
Su Mo Tu We Th Fr Sa
010203
04050607080910
11121314151617
18192021222324
252627282930
 
December
Su Mo Tu We Th Fr Sa
01
02030405060708
09101112131415
16171819202122
23242526272829
3031  
Millennium Century Year[1]
2nd Millennium: 18th century:   1764   1792
2nd Millennium: 19th century:   1804   1832   1860   1888
2nd Millennium: 20th century:   1928   1956   1984
3rd Millennium: 21st century:   2012   2040   2068   2096
3rd Millennium: 22nd century:   2108   2136   2164   2192

References

  1. 1 2 "A leap year beginning on Sunday", jonstlouis.htmlplanet.com, 2011, webpage: HTMcal.
Gregorian year types per leap cycle by Dominical letter (DL)[1] and Doomsday (DD)
Year starts Common years Leap years
1 Jan Count Ratio 31 Dec DL DD Count Ratio 31 Dec DL DD Count Ratio
Sun 58 14.50 % Sun A Tue 43 10.75 % Mon AG Wed 15 03.75 %
Sat 56 14.00 % Sat B Mon 43 10.75 % Sun BA Tue 13 03.25 %
Fri 58 14.50 % Fri C Sun 43 10.75 % Sat CB Mon 15 03.75 %
Thu 57 14.25 % Thu D Sat 44 11.00 % Fri DC Sun 13 03.25 %
Wed 57 14.25 % Wed E Fri 43 10.75 % Thu ED Sat 14 03.50 %
Tue 58 14.50 % Tue F Thu 44 11.00 % Wed FE Fri 14 03.50 %
Mon 56 14.00 % Mon G Wed 43 10.75 % Tue GF Thu 13 03.25 %
∑ 400 100.0 % 303 75.75 % 97 24.25 %
  1. ↑ Robert H. van Gent (2005). "Mathematics of the ISO calendar". Department of Mathematics at Utrecht University.
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