This is the calendar for any leap year starting on Sunday , January 1 (dominical letter AG ), such as 1956, 1984, 2012, 2040, and 2068.[1 ] This is the only leap year with three occurrences of Friday the 13th , each three months apart in January, April, and July (common year starting on Thursdays share this characteristic). Uniquely, the instances of Friday the 13th are also 13 weeks apart from one another.
They usually occur in 28 year intervals. Exceptions happen when there is no leap year on the beginning of a century.
January
wk
Mo
Tu
We
Th
Fr
Sa
Su
52
1
1
2
3
4
5
6
7
8
2
9
10
11
12
13
14
15
3
16
17
18
19
20
21
22
4
23
24
25
26
27
28
29
5
30
31
February
wk
Mo
Tu
We
Th
Fr
Sa
Su
5
1
2
3
4
5
6
6
7
8
9
10
11
12
7
13
14
15
16
17
18
19
8
20
21
22
23
24
25
26
9
27
28
29
March
wk
Mo
Tu
We
Th
Fr
Sa
Su
9
1
2
3
4
10
5
6
7
8
9
10
11
11
12
13
14
15
16
17
18
12
19
20
21
22
23
24
25
13
26
27
28
29
30
31
April
wk
Mo
Tu
We
Th
Fr
Sa
Su
13
1
14
2
3
4
5
6
7
8
15
9
10
11
12
13
14
15
16
16
17
18
19
20
21
22
17
23
24
25
26
27
28
29
18
30
May
wk
Mo
Tu
We
Th
Fr
Sa
Su
18
1
2
3
4
5
6
19
7
8
9
10
11
12
13
20
14
15
16
17
18
19
20
21
21
22
23
24
25
26
27
22
28
29
30
31
June
wk
Mo
Tu
We
Th
Fr
Sa
Su
22
1
2
3
23
4
5
6
7
8
9
10
24
11
12
13
14
15
16
17
25
18
19
20
21
22
23
24
26
25
26
27
28
29
30
July
wk
Mo
Tu
We
Th
Fr
Sa
Su
26
1
27
2
3
4
5
6
7
8
28
9
10
11
12
13
14
15
29
16
17
18
19
20
21
22
30
23
24
25
26
27
28
29
31
30
31
August
wk
Mo
Tu
We
Th
Fr
Sa
Su
31
1
2
3
4
5
32
6
7
8
9
10
11
12
33
13
14
15
16
17
18
19
34
20
21
22
23
24
25
26
35
27
28
29
30
31
September
wk
Mo
Tu
We
Th
Fr
Sa
Su
35
1
2
36
3
4
5
6
7
8
9
37
10
11
12
13
14
15
16
38
17
18
19
20
21
22
23
39
24
25
26
27
28
29
30
October
wk
Mo
Tu
We
Th
Fr
Sa
Su
40
1
2
3
4
5
6
7
41
8
9
10
11
12
13
14
42
15
16
17
18
19
20
21
43
22
23
24
25
26
27
28
44
29
30
31
November
wk
Mo
Tu
We
Th
Fr
Sa
Su
44
1
2
3
4
45
5
6
7
8
9
10
11
46
12
13
14
15
16
17
18
47
19
20
21
22
23
24
25
48
26
27
28
29
30
December
wk
Mo
Tu
We
Th
Fr
Sa
Su
48
1
2
49
3
4
5
6
7
8
9
50
10
11
12
13
14
15
16
51
17
18
19
20
21
22
23
52
24
25
26
27
28
29
30
1
31
Previous year | Next year
Millennium
Century
Year
2nd Millennium :
18th century :
1764
1792
19th century :
1804
1832
1860
1888
20th century :
1928
1956
1984
3rd Millennium :
21st century :
2012
2040
2068
2096
22nd century :
2108
2136
2164
2192
References [ ]
^ "A leap year beginning on Sunday", jonstlouis.htmlplanet.com, 2011, webpage: HTMcal .