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Week Numbers for 2021

This page lists all weeks in 2021.
All weeks are starting on Monday and ending on Sunday (ISO-8601).
Find more info on our main weeknumber page.

« week numbers for 2020 | week numbers for 2022 »

Week numberFrom DateTo Date
Week 01January 4, 2021January 10, 2021
Week 02January 11, 2021January 17, 2021
Week 03January 18, 2021January 24, 2021
Week 04January 25, 2021January 31, 2021
Week 05February 1, 2021February 7, 2021
Week 06February 8, 2021February 14, 2021
Week 07February 15, 2021February 21, 2021
Week 08February 22, 2021February 28, 2021
Week 09March 1, 2021March 7, 2021
Week 10March 8, 2021March 14, 2021
Week 11March 15, 2021March 21, 2021
Week 12March 22, 2021March 28, 2021
Week 13March 29, 2021April 4, 2021
Week 14April 5, 2021April 11, 2021
Week 15April 12, 2021April 18, 2021
Week 16April 19, 2021April 25, 2021
Week 17April 26, 2021May 2, 2021
Week 18May 3, 2021May 9, 2021
Week 19May 10, 2021May 16, 2021
Week 20May 17, 2021May 23, 2021
Week 21May 24, 2021May 30, 2021
Week 22May 31, 2021June 6, 2021
Week 23June 7, 2021June 13, 2021
Week 24June 14, 2021June 20, 2021
Week 25June 21, 2021June 27, 2021
Week 26June 28, 2021July 4, 2021
Week 27July 5, 2021July 11, 2021
Week 28July 12, 2021July 18, 2021
Week 29July 19, 2021July 25, 2021
Week 30July 26, 2021August 1, 2021
Week 31August 2, 2021August 8, 2021
Week 32August 9, 2021August 15, 2021
Week 33August 16, 2021August 22, 2021
Week 34August 23, 2021August 29, 2021
Week 35August 30, 2021September 5, 2021
Week 36September 6, 2021September 12, 2021
Week 37September 13, 2021September 19, 2021
Week 38September 20, 2021September 26, 2021
Week 39September 27, 2021October 3, 2021
Week 40October 4, 2021October 10, 2021
Week 41October 11, 2021October 17, 2021
Week 42October 18, 2021October 24, 2021
Week 43October 25, 2021October 31, 2021
Week 44November 1, 2021November 7, 2021
Week 45November 8, 2021November 14, 2021
Week 46November 15, 2021November 21, 2021
Week 47November 22, 2021November 28, 2021
Week 48November 29, 2021December 5, 2021
Week 49December 6, 2021December 12, 2021
Week 50December 13, 2021December 19, 2021
Week 51December 20, 2021December 26, 2021
Week 52December 27, 2021January 2, 2022

« week numbers for 2020 | week numbers for 2022 »

Other years: 1920-1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030

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