Number of weeks in 2021 year is 52 weeks
Weeks are according Switzerland calendar rules, Monday first day and weeks are Monday to Sunday

Week # From Date To Date Weeks from Now
Week 1 January 4, 2021 January 10, 2021 passed 202 weeks ago
Week 2 January 11, 2021 January 17, 2021 passed 201 weeks ago
Week 3 January 18, 2021 January 24, 2021 passed 200 weeks ago
Week 4 January 25, 2021 January 31, 2021 passed 199 weeks ago
Week 5 February 1, 2021 February 7, 2021 passed 198 weeks ago
Week 6 February 8, 2021 February 14, 2021 passed 197 weeks ago
Week 7 February 15, 2021 February 21, 2021 passed 196 weeks ago
Week 8 February 22, 2021 February 28, 2021 passed 195 weeks ago
Week 9 March 1, 2021 March 7, 2021 passed 194 weeks ago
Week 10 March 8, 2021 March 14, 2021 passed 193 weeks ago
Week 11 March 15, 2021 March 21, 2021 passed 192 weeks ago
Week 12 March 22, 2021 March 28, 2021 passed 191 weeks ago
Week 13 March 29, 2021 April 4, 2021 passed 190 weeks ago
Week 14 April 5, 2021 April 11, 2021 passed 189 weeks ago
Week 15 April 12, 2021 April 18, 2021 passed 188 weeks ago
Week 16 April 19, 2021 April 25, 2021 passed 187 weeks ago
Week 17 April 26, 2021 May 2, 2021 passed 186 weeks ago
Week 18 May 3, 2021 May 9, 2021 passed 185 weeks ago
Week 19 May 10, 2021 May 16, 2021 passed 184 weeks ago
Week 20 May 17, 2021 May 23, 2021 passed 183 weeks ago
Week 21 May 24, 2021 May 30, 2021 passed 182 weeks ago
Week 22 May 31, 2021 June 6, 2021 passed 181 weeks ago
Week 23 June 7, 2021 June 13, 2021 passed 180 weeks ago
Week 24 June 14, 2021 June 20, 2021 passed 179 weeks ago
Week 25 June 21, 2021 June 27, 2021 passed 178 weeks ago
Week 26 June 28, 2021 July 4, 2021 passed 177 weeks ago
Week 27 July 5, 2021 July 11, 2021 passed 176 weeks ago
Week 28 July 12, 2021 July 18, 2021 passed 175 weeks ago
Week 29 July 19, 2021 July 25, 2021 passed 174 weeks ago
Week 30 July 26, 2021 August 1, 2021 passed 173 weeks ago
Week 31 August 2, 2021 August 8, 2021 passed 172 weeks ago
Week 32 August 9, 2021 August 15, 2021 passed 171 weeks ago
Week 33 August 16, 2021 August 22, 2021 passed 170 weeks ago
Week 34 August 23, 2021 August 29, 2021 passed 169 weeks ago
Week 35 August 30, 2021 September 5, 2021 passed 168 weeks ago
Week 36 September 6, 2021 September 12, 2021 passed 167 weeks ago
Week 37 September 13, 2021 September 19, 2021 passed 166 weeks ago
Week 38 September 20, 2021 September 26, 2021 passed 165 weeks ago
Week 39 September 27, 2021 October 3, 2021 passed 164 weeks ago
Week 40 October 4, 2021 October 10, 2021 passed 163 weeks ago
Week 41 October 11, 2021 October 17, 2021 passed 162 weeks ago
Week 42 October 18, 2021 October 24, 2021 passed 161 weeks ago
Week 43 October 25, 2021 October 31, 2021 passed 160 weeks ago
Week 44 November 1, 2021 November 7, 2021 passed 159 weeks ago
Week 45 November 8, 2021 November 14, 2021 passed 158 weeks ago
Week 46 November 15, 2021 November 21, 2021 passed 157 weeks ago
Week 47 November 22, 2021 November 28, 2021 passed 156 weeks ago
Week 48 November 29, 2021 December 5, 2021 passed 155 weeks ago
Week 49 December 6, 2021 December 12, 2021 passed 154 weeks ago
Week 50 December 13, 2021 December 19, 2021 passed 153 weeks ago
Week 51 December 20, 2021 December 26, 2021 passed 152 weeks ago
Week 52 December 27, 2021 January 2, 2022 passed 151 weeks ago