Calendar for any leap year starting on Friday, presented as common in many English-speaking areas |
---|
|
January
|
|
Su
|
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
|
|
|
|
February
|
|
Su
|
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 |
|
|
|
|
|
|
March
|
|
Su
|
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
|
|
|
|
|
April
|
|
Su
|
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
|
|
|
|
|
May
|
|
Su
|
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
|
|
|
|
|
June
|
|
Su
|
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 |
|
|
|
|
|
July
|
|
Su
|
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
|
|
|
|
August
|
|
Su
|
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
|
|
|
|
|
September
|
|
Su
|
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 |
|
|
|
|
October
|
|
Su
|
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
|
|
|
|
November
|
|
Su
|
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 |
|
|
|
|
|
December
|
|
Su
|
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
|
|
|
ISO 8601-conformant calendar with week numbers for any leap year starting on Friday (dominical letter CB) |
---|
|
January
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
53
|
|
|
|
|
01 |
02 |
03
|
01
|
04 |
05 |
06 |
07 |
08 |
09 |
10
|
02
|
11 |
12 |
13 |
14 |
15 |
16 |
17
|
03
|
18 |
19 |
20 |
21 |
22 |
23 |
24
|
04
|
25 |
26 |
27 |
28 |
29 |
30 |
31
|
|
|
|
|
February
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
05
|
01 |
02 |
03 |
04 |
05 |
06 |
07
|
06
|
08 |
09 |
10 |
11 |
12 |
13 |
14
|
07
|
15 |
16 |
17 |
18 |
19 |
20 |
21
|
08
|
22 |
23 |
24 |
25 |
26 |
27 |
28
|
09
|
29 |
|
|
|
|
|
|
|
March
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
09
|
|
01 |
02 |
03 |
04 |
05 |
06
|
10
|
07 |
08 |
09 |
10 |
11 |
12 |
13
|
11
|
14 |
15 |
16 |
17 |
18 |
19 |
20
|
12
|
21 |
22 |
23 |
24 |
25 |
26 |
27
|
13
|
28 |
29 |
30 |
31
|
|
|
|
|
|
April
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
13
|
|
|
|
|
01 |
02 |
03
|
14
|
04 |
05 |
06 |
07 |
08 |
09 |
10
|
15
|
11 |
12 |
13 |
14 |
15 |
16 |
17
|
16
|
18 |
19 |
20 |
21 |
22 |
23 |
24
|
17
|
25 |
26 |
27 |
28 |
29 |
30 |
|
|
|
|
|
May
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
17
|
|
|
|
|
|
|
01
|
18
|
02 |
03 |
04 |
05 |
06 |
07 |
08
|
19
|
09 |
10 |
11 |
12 |
13 |
14 |
15
|
20
|
16 |
17 |
18 |
19 |
20 |
21 |
22
|
21
|
23 |
24 |
25 |
26 |
27 |
28 |
29
|
22
|
30 |
31
|
|
|
|
June
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
22
|
|
|
01 |
02 |
03 |
04 |
05
|
23
|
06 |
07 |
08 |
09 |
10 |
11 |
12
|
24
|
13 |
14 |
15 |
16 |
17 |
18 |
19
|
25
|
20 |
21 |
22 |
23 |
24 |
25 |
26
|
26
|
27 |
28 |
29 |
30 |
|
|
|
|
|
|
July
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
26
|
|
|
|
|
01 |
02 |
03
|
27
|
04 |
05 |
06 |
07 |
08 |
09 |
10
|
28
|
11 |
12 |
13 |
14 |
15 |
16 |
17
|
29
|
18 |
19 |
20 |
21 |
22 |
23 |
24
|
30
|
25 |
26 |
27 |
28 |
29 |
30 |
31
|
|
|
|
|
August
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
31
|
01 |
02 |
03 |
04 |
05 |
06 |
07
|
32
|
08 |
09 |
10 |
11 |
12 |
13 |
14
|
33
|
15 |
16 |
17 |
18 |
19 |
20 |
21
|
34
|
22 |
23 |
24 |
25 |
26 |
27 |
28
|
35
|
29 |
30 |
31
|
|
|
|
|
|
September
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
35
|
|
|
|
01 |
02 |
03 |
04
|
36
|
05 |
06 |
07 |
08 |
09 |
10 |
11
|
37
|
12 |
13 |
14 |
15 |
16 |
17 |
18
|
38
|
19 |
20 |
21 |
22 |
23 |
24 |
25
|
39
|
26 |
27 |
28 |
29 |
30 |
|
|
|
|
|
|
October
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
39
|
|
|
|
|
|
01 |
02
|
40
|
03 |
04 |
05 |
06 |
07 |
08 |
09
|
41
|
10 |
11 |
12 |
13 |
14 |
15 |
16
|
42
|
17 |
18 |
19 |
20 |
21 |
22 |
23
|
43
|
24 |
25 |
26 |
27 |
28 |
29 |
30
|
44
|
31
|
|
|
|
November
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
44
|
|
01 |
02 |
03 |
04 |
05 |
06
|
45
|
07 |
08 |
09 |
10 |
11 |
12 |
13
|
46
|
14 |
15 |
16 |
17 |
18 |
19 |
20
|
47
|
21 |
22 |
23 |
24 |
25 |
26 |
27
|
48
|
28 |
29 |
30 |
|
|
|
|
|
|
December
|
|
Wk
|
Mo
|
Tu
|
We
|
Th
|
Fr
|
Sa
|
Su
|
48
|
|
|
|
01 |
02 |
03 |
04
|
49
|
05 |
06 |
07 |
08 |
09 |
10 |
11
|
50
|
12 |
13 |
14 |
15 |
16 |
17 |
18
|
51
|
19 |
20 |
21 |
22 |
23 |
24 |
25
|
52
|
26 |
27 |
28 |
29 |
30 |
31
|
|
|
|
|
Leap years that begin on Friday, along with those starting on Sunday, occur most frequently: 15 of the 97 (≈ 15.46%) total leap years in a 400-year cycle of the Gregorian calendar. Thus, their overall occurrence is 3.75% (15 out of 400).
For this kind of year, the ISO week 10 (which begins March 7) and all subsequent ISO weeks occur later than in all other leap years.
400-year cycle
0–99
|
16 |
44 |
72 |
|
100–199
|
112 |
140 |
168 |
196
|
200–299
|
208 |
236 |
264 |
292
|
300–399
|
304 |
332 |
360 |
388
|
Like all leap year types, the one starting with 1 January on a Friday occurs exactly once in a 28-year cycle in the Julian calendar, i.e. in 3.57% of years. As the Julian calendar repeats after 28 years that means it will also repeat after 700 years, i.e. 25 cycles. The year's position in the cycle is given by the formula ((year + 8) mod 28) + 1).
Roman Catholic Solemnities
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Australia and New Zealand
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