| January 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 01 |
|
1 |
2 |
3 |
4 |
5 |
6 |
| 02 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
| 03 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
| 04 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
| 05 |
28 |
29 |
30 |
31 |
|
|
|
| February 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 05 |
|
|
|
|
1 |
2 |
3 |
| 06 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
| 07 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
| 08 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
| 09 |
25 |
26 |
27 |
28 |
29 |
|
|
| March 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 09 |
|
|
|
|
|
1 |
2 |
| 10 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
| 11 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
| 12 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
| 13 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
| 14 |
31 |
|
|
|
|
|
|
| April 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 14 |
|
1 |
2 |
3 |
4 |
5 |
6 |
| 15 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
| 16 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
| 17 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
| 18 |
28 |
29 |
30 |
|
|
|
|
| May 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 18 |
|
|
|
1 |
2 |
3 |
4 |
| 19 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
| 20 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
| 21 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
| 22 |
26 |
27 |
28 |
29 |
30 |
31 |
|
| June 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 22 |
|
|
|
|
|
|
1 |
| 23 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
| 24 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
| 25 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
| 26 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
| 27 |
30 |
|
|
|
|
|
|
| July 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 27 |
|
1 |
2 |
3 |
4 |
5 |
6 |
| 28 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
| 29 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
| 30 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
| 31 |
28 |
29 |
30 |
31 |
|
|
|
| August 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 31 |
|
|
|
|
1 |
2 |
3 |
| 32 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
| 33 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
| 34 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
| 35 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
| September 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 36 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
| 37 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
| 38 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
| 39 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
| 40 |
29 |
30 |
|
|
|
|
|
| October 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 40 |
|
|
1 |
2 |
3 |
4 |
5 |
| 41 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
| 42 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
| 43 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
| 44 |
27 |
28 |
29 |
30 |
31 |
|
|
| November 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 44 |
|
|
|
|
|
1 |
2 |
| 45 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
| 46 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
| 47 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
| 48 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
| December 1980 |
| Work week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|
| 49 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
| 50 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
| 51 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
| 52 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
| 01 (1981) |
29 |
30 |
31 |
|
|
|
|
Show week number calendar for provided datecode
This tool will show one- or two-month calendar, and optionally full-year calendar
for specific datecode. The datecode must be in format YYWW, where YY are the last
two digits of the year, and WW is the week number. The week number calculation
is based upon ISO-8601 standard.
Quick links to access calendars from 1970 to 2025: