Number of weeks in 1771 year is 52 weeks
Weeks are according Portugal calendar rules, Monday first day and weeks are Monday to Sunday

Week # From Date To Date Weeks from Now
Week 1 December 31, 1770 January 6, 1771 passed 13246 weeks ago
Week 2 January 7, 1771 January 13, 1771 passed 13245 weeks ago
Week 3 January 14, 1771 January 20, 1771 passed 13244 weeks ago
Week 4 January 21, 1771 January 27, 1771 passed 13243 weeks ago
Week 5 January 28, 1771 February 3, 1771 passed 13242 weeks ago
Week 6 February 4, 1771 February 10, 1771 passed 13241 weeks ago
Week 7 February 11, 1771 February 17, 1771 passed 13240 weeks ago
Week 8 February 18, 1771 February 24, 1771 passed 13239 weeks ago
Week 9 February 25, 1771 March 3, 1771 passed 13238 weeks ago
Week 10 March 4, 1771 March 10, 1771 passed 13237 weeks ago
Week 11 March 11, 1771 March 17, 1771 passed 13236 weeks ago
Week 12 March 18, 1771 March 24, 1771 passed 13235 weeks ago
Week 13 March 25, 1771 March 31, 1771 passed 13234 weeks ago
Week 14 April 1, 1771 April 7, 1771 passed 13233 weeks ago
Week 15 April 8, 1771 April 14, 1771 passed 13232 weeks ago
Week 16 April 15, 1771 April 21, 1771 passed 13231 weeks ago
Week 17 April 22, 1771 April 28, 1771 passed 13230 weeks ago
Week 18 April 29, 1771 May 5, 1771 passed 13229 weeks ago
Week 19 May 6, 1771 May 12, 1771 passed 13228 weeks ago
Week 20 May 13, 1771 May 19, 1771 passed 13227 weeks ago
Week 21 May 20, 1771 May 26, 1771 passed 13226 weeks ago
Week 22 May 27, 1771 June 2, 1771 passed 13225 weeks ago
Week 23 June 3, 1771 June 9, 1771 passed 13224 weeks ago
Week 24 June 10, 1771 June 16, 1771 passed 13223 weeks ago
Week 25 June 17, 1771 June 23, 1771 passed 13222 weeks ago
Week 26 June 24, 1771 June 30, 1771 passed 13221 weeks ago
Week 27 July 1, 1771 July 7, 1771 passed 13220 weeks ago
Week 28 July 8, 1771 July 14, 1771 passed 13219 weeks ago
Week 29 July 15, 1771 July 21, 1771 passed 13218 weeks ago
Week 30 July 22, 1771 July 28, 1771 passed 13217 weeks ago
Week 31 July 29, 1771 August 4, 1771 passed 13216 weeks ago
Week 32 August 5, 1771 August 11, 1771 passed 13215 weeks ago
Week 33 August 12, 1771 August 18, 1771 passed 13214 weeks ago
Week 34 August 19, 1771 August 25, 1771 passed 13213 weeks ago
Week 35 August 26, 1771 September 1, 1771 passed 13212 weeks ago
Week 36 September 2, 1771 September 8, 1771 passed 13211 weeks ago
Week 37 September 9, 1771 September 15, 1771 passed 13210 weeks ago
Week 38 September 16, 1771 September 22, 1771 passed 13209 weeks ago
Week 39 September 23, 1771 September 29, 1771 passed 13208 weeks ago
Week 40 September 30, 1771 October 6, 1771 passed 13207 weeks ago
Week 41 October 7, 1771 October 13, 1771 passed 13206 weeks ago
Week 42 October 14, 1771 October 20, 1771 passed 13205 weeks ago
Week 43 October 21, 1771 October 27, 1771 passed 13204 weeks ago
Week 44 October 28, 1771 November 3, 1771 passed 13203 weeks ago
Week 45 November 4, 1771 November 10, 1771 passed 13202 weeks ago
Week 46 November 11, 1771 November 17, 1771 passed 13201 weeks ago
Week 47 November 18, 1771 November 24, 1771 passed 13200 weeks ago
Week 48 November 25, 1771 December 1, 1771 passed 13199 weeks ago
Week 49 December 2, 1771 December 8, 1771 passed 13198 weeks ago
Week 50 December 9, 1771 December 15, 1771 passed 13197 weeks ago
Week 51 December 16, 1771 December 22, 1771 passed 13196 weeks ago
Week 52 December 23, 1771 December 29, 1771 passed 13195 weeks ago