NOTE: THIS TABLE IS NOT PART OF THE PROCESS AND IS PRESENTED HERE ONLY AS AN AID IN LEARNING THE PROCESS. HOWEVER, IF YOU WISH TO MEMORIZE THIS TABLE IN WHOLE OR IN PART IN LIEU OF GOING THROUGH STEP 2 OF THE FORMULA, YOU ARE CERTAINLY WELCOME TO DO SO.
To find the value for the calendar year or “full year” (i.e., century plus two-digit year), locate the two-digit year in one of four left-hand columns and then move over to the right to the appropriate column representing the “century” or century value. (When we use the word century, we refer to the cardinal century number and not its ordinal representation, e.g., 1600s and not 17th century.)
Note how the calendar cycle repeats itself every 28 years within a century with one possible exception. The reason for this is that there are four years in a leap year cycle and seven days in a week. The exception is turn-of-century (’00) years not evenly divisible by 400 (see below).
For leap years (gray shaded rows), two calendar year values are shown. The first value is for January and February and the second one for the rest of the year. However, for turn of century years not divisible by 400 (e.g., 17YY, 18YY, 19YY) there is no leap year and so only the second value applies to the full year calendar.
In Step 2 in the basic Day-of-Week calculation, you can access this table by clicking on the menu item in the right column of this site or by clicking on the (*) symbol at the end of step 2.
(For an alternate table that shows the year values by Value then year, click here.)
In Step 2 in the basic Day-of-Week calculation, you can access this table by clicking on the menu item in the right column of this site or by clicking on the (*) symbol at the end of step 2.
(For an alternate table that shows the year values by Value then year, click here.)
If ’YY is
|
and Century Value is
| ||||||
0
|
5
|
3
|
1
| ||||
16YY
20YY
|
17YY
21YY
|
18YY
22YY
|
19YY
23YY
| ||||
00
|
28
|
56
|
84
|
6/0
|
4/5
|
3/4
|
2/3
|
01
|
29
|
57
|
85
|
1
|
6
|
5
|
4
|
02
|
30
|
58
|
86
|
2
|
0
|
6
|
5
|
03
|
31
|
59
|
87
|
3
|
1
|
0
|
6
|
04
|
32
|
60
|
88
|
4/5
|
2/3
|
1/2
|
0/1
|
05
|
33
|
61
|
89
|
6
|
4
|
3
|
2
|
06
|
34
|
62
|
90
|
0
|
5
|
4
|
3
|
07
|
35
|
63
|
91
|
1
|
6
|
5
|
4
|
08
|
36
|
64
|
92
|
2/3
|
0/1
|
6/0
|
5/6
|
09
|
37
|
65
|
93
|
4
|
2
|
1
|
0
|
10
|
38
|
66
|
94
|
5
|
3
|
2
|
1
|
11
|
39
|
67
|
95
|
6
|
4
|
3
|
2
|
12
|
40
|
68
|
96
|
0/1
|
5/6
|
4/5
|
3/4
|
13
|
41
|
69
|
97
|
2
|
0
|
6
|
5
|
14
|
42
|
70
|
98
|
3
|
1
|
0
|
6
|
15
|
43
|
71
|
99
|
4
|
2
|
1
|
0
|
16
|
44
|
72
|
5/6
|
3/4
|
2/3
|
1/2
| |
17
|
45
|
73
|
0
|
5
|
4
|
3
| |
18
|
46
|
74
|
1
|
6
|
5
|
4
| |
19
|
47
|
75
|
2
|
0
|
6
|
5
| |
20
|
48
|
76
|
3/4
|
1/2
|
0/1
|
6/0
| |
21
|
49
|
77
|
5
|
3
|
2
|
1
| |
22
|
50
|
78
|
6
|
4
|
3
|
2
| |
23
|
51
|
79
|
0
|
5
|
4
|
3
| |
24
|
52
|
80
|
1/2
|
6/0
|
5/6
|
4/5
| |
25
|
53
|
81
|
3
|
1
|
0
|
6
| |
26
|
54
|
82
|
4
|
2
|
1
|
0
| |
27
|
55
|
83
|
5
|
3
|
2
|
1
| |
Sometimes I may depict the values in leap years as a single value for the full year followed by an asterisk. For example, a single value of 1* in a leap year would be the same as 0/1, 0 for January and February and 1 for the rest of the year.
When I refer to the "full year" or "complete year" value, I am talking about the combined value for the Century (the first two digits of the four-digit year) and the Year (the last two digits of the four-digit year). When I refer to the value of the "entire year," I am referring to the (full) year value that applies to every month in the year, January to December. This would apply only to the value for non-leap years because the value for January and February in leap years is one less than the full year value, as shown above.
click here. These options are alternatives to step 2.
