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Week 01, 1981
Week 01 of 1981 spans from Monday, December 29, 1980 to Sunday, January 4, 1981, according to the ISO 8601 date standard.
| Day of Week | Date |
|---|---|
| Monday | Monday, December 29, 1980 |
| Tuesday | Tuesday, December 30, 1980 |
| Wednesday | Wednesday, December 31, 1980 |
| Thursday | Thursday, January 1, 1981 |
| Friday | Friday, January 2, 1981 |
| Saturday | Saturday, January 3, 1981 |
| Sunday | Sunday, January 4, 1981 |
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How many weeks in year 1981?
There are 53 weeks in year 1981 according to the ISO 8601 standard.