Perpectual Calendars

This perpetual calendar will lead you to the appropriate month calendar to use for some target date you are interested in.  This page is step 1 of a three-step process.

Step 1: Locate the target Year in one of the yellow columns in the table below.  Then locate the target Century in one of the two top blue heading rows. Then click on the number in the cell at the intersection of the selected row and column.  You do not have to remember the number in that cell, but you do need to know if the Year is a leap year if the month is January or February. Leap years are in the   gray-shaded rows .

For your information here only, the numbers shown in the blue cells are the values for the "full" or "complete" year, meaning Century and Year.  The value relates to the "entire" year in non-leap years, but in leap years, the values for January and February are reduced by 1, so 0 becomes 6, 1 becomes 0, and so on.

Years
Centuries
1600
1700
1800
1900
2000
2100
2200
2300
0
28
56
84
1
29
57
85
    1
2
30
58
86
3
31
59
87
4
32
60
88
5
33
61
89
6
34
62
90
7
35
63
91
8
36
64
92
9
37
65
93
10
38
66
94
11
39
67
95
12
40
68
96
13
41
69
97
14
42
70
98
15
43
71
99
16
44
72

17
45
73

18
46
74

19
47
75

2
48
76

21
49
77

22
50
78

23
51
79

24
52
80


25
53
81

26
54
82


27
55
83