Week Numbers 1981
1981 has 52 weeks. Week 1 runs from Sunday, December 28, 1980 to Saturday, January 3, 1981. US weeks start on Sunday, and week 1 is the week with January 1.
ISO weeks: 1981 has 53 ISO weeks, and ISO week 1 runs from Monday, December 29, 1980 to Sunday, January 4, 1981.
See the 1981 calendar.
- Albania
- Algeria
- Argentina
- Armenia
- Australia
- Austria
- Azerbaijan
- Bahrain
- Belarus
- Belgium
- Belize
- Bolivia
- Brazil
- Brunei Darussalam
- Bulgaria
- Canada
- Chile
- China
- Colombia
- Costa Rica
- Czech Republic
- Democratic People's Republic of Korea
- Denmark
- Dominican Republic
- Ecuador
- Egypt
- El Salvador
- Faroe Islands
- Finland
- France
- Georgia
- Germany
- Greece
- Guatemala
- Honduras
- Hong Kong
- Hungary
- India
- Indonesia
- Iran
- Iraq
- Ireland
- Israel
- Italy
- Jamaica
- Jordan
- Kazakstan
- Kenya
- Kuwait
- Kyrgyzstan
- Latvia
- Lebanon
- Libya
- Liechtenstein
- Lithuania
- Luxembourg
- Macau
- Macedonia
- Malaysia
- Maldives
- Mexico
- Monaco
- Mongolia
- Morocco
- Netherlands
- New Zealand
- Nicaragua
- Norway
- Oman
- Panama
- Paraguay
- Peru
- Philippines
- Poland
- Portugal
- Puerto Rico
- Qatar
- Romania
- Russia
- Saudi Arabia
- Serbia
- Singapore
- Slovakia
- South Africa
- South Korea
- Spain
- Sweden
- Switzerland
- Syria
- Taiwan
- Thailand
- Trinidad and Tobago
- Tunisia
- Turkey
- Ukraine
- United Arab Emirates
- United Kingdom
- United States
- Uzbekistan
- Venezuela
- Vietnam
- Yemen
- Zimbabwe
| Week # | From Date | To Date | Weeks from Now |
|---|---|---|---|
| Week 1 | December 28, 1980 | January 3, 1981 | passed 2390 weeks ago |
| Week 2 | January 4, 1981 | January 10, 1981 | passed 2389 weeks ago |
| Week 3 | January 11, 1981 | January 17, 1981 | passed 2388 weeks ago |
| Week 4 | January 18, 1981 | January 24, 1981 | passed 2387 weeks ago |
| Week 5 | January 25, 1981 | January 31, 1981 | passed 2386 weeks ago |
| Week 6 | February 1, 1981 | February 7, 1981 | passed 2385 weeks ago |
| Week 7 | February 8, 1981 | February 14, 1981 | passed 2384 weeks ago |
| Week 8 | February 15, 1981 | February 21, 1981 | passed 2383 weeks ago |
| Week 9 | February 22, 1981 | February 28, 1981 | passed 2382 weeks ago |
| Week 10 | March 1, 1981 | March 7, 1981 | passed 2381 weeks ago |
| Week 11 | March 8, 1981 | March 14, 1981 | passed 2380 weeks ago |
| Week 12 | March 15, 1981 | March 21, 1981 | passed 2379 weeks ago |
| Week 13 | March 22, 1981 | March 28, 1981 | passed 2378 weeks ago |
| Week 14 | March 29, 1981 | April 4, 1981 | passed 2377 weeks ago |
| Week 15 | April 5, 1981 | April 11, 1981 | passed 2376 weeks ago |
| Week 16 | April 12, 1981 | April 18, 1981 | passed 2375 weeks ago |
| Week 17 | April 19, 1981 | April 25, 1981 | passed 2374 weeks ago |
| Week 18 | April 26, 1981 | May 2, 1981 | passed 2373 weeks ago |
| Week 19 | May 3, 1981 | May 9, 1981 | passed 2372 weeks ago |
| Week 20 | May 10, 1981 | May 16, 1981 | passed 2371 weeks ago |
| Week 21 | May 17, 1981 | May 23, 1981 | passed 2370 weeks ago |
| Week 22 | May 24, 1981 | May 30, 1981 | passed 2369 weeks ago |
| Week 23 | May 31, 1981 | June 6, 1981 | passed 2368 weeks ago |
| Week 24 | June 7, 1981 | June 13, 1981 | passed 2367 weeks ago |
| Week 25 | June 14, 1981 | June 20, 1981 | passed 2366 weeks ago |
| Week 26 | June 21, 1981 | June 27, 1981 | passed 2365 weeks ago |
| Week 27 | June 28, 1981 | July 4, 1981 | passed 2364 weeks ago |
| Week 28 | July 5, 1981 | July 11, 1981 | passed 2363 weeks ago |
| Week 29 | July 12, 1981 | July 18, 1981 | passed 2362 weeks ago |
| Week 30 | July 19, 1981 | July 25, 1981 | passed 2361 weeks ago |
| Week 31 | July 26, 1981 | August 1, 1981 | passed 2360 weeks ago |
| Week 32 | August 2, 1981 | August 8, 1981 | passed 2359 weeks ago |
| Week 33 | August 9, 1981 | August 15, 1981 | passed 2358 weeks ago |
| Week 34 | August 16, 1981 | August 22, 1981 | passed 2357 weeks ago |
| Week 35 | August 23, 1981 | August 29, 1981 | passed 2356 weeks ago |
| Week 36 | August 30, 1981 | September 5, 1981 | passed 2355 weeks ago |
| Week 37 | September 6, 1981 | September 12, 1981 | passed 2354 weeks ago |
| Week 38 | September 13, 1981 | September 19, 1981 | passed 2353 weeks ago |
| Week 39 | September 20, 1981 | September 26, 1981 | passed 2352 weeks ago |
| Week 40 | September 27, 1981 | October 3, 1981 | passed 2351 weeks ago |
| Week 41 | October 4, 1981 | October 10, 1981 | passed 2350 weeks ago |
| Week 42 | October 11, 1981 | October 17, 1981 | passed 2349 weeks ago |
| Week 43 | October 18, 1981 | October 24, 1981 | passed 2348 weeks ago |
| Week 44 | October 25, 1981 | October 31, 1981 | passed 2347 weeks ago |
| Week 45 | November 1, 1981 | November 7, 1981 | passed 2346 weeks ago |
| Week 46 | November 8, 1981 | November 14, 1981 | passed 2345 weeks ago |
| Week 47 | November 15, 1981 | November 21, 1981 | passed 2344 weeks ago |
| Week 48 | November 22, 1981 | November 28, 1981 | passed 2343 weeks ago |
| Week 49 | November 29, 1981 | December 5, 1981 | passed 2342 weeks ago |
| Week 50 | December 6, 1981 | December 12, 1981 | passed 2341 weeks ago |
| Week 51 | December 13, 1981 | December 19, 1981 | passed 2340 weeks ago |
| Week 52 | December 20, 1981 | December 26, 1981 | passed 2339 weeks ago |