Number of weeks in 1677 year is 52 weeks
Weeks are according Spain calendar rules, Monday first day and weeks are Monday to Sunday

Week # From Date To Date Weeks from Now
Week 1 January 4, 1677 January 10, 1677 passed 18151 weeks ago
Week 2 January 11, 1677 January 17, 1677 passed 18150 weeks ago
Week 3 January 18, 1677 January 24, 1677 passed 18149 weeks ago
Week 4 January 25, 1677 January 31, 1677 passed 18148 weeks ago
Week 5 February 1, 1677 February 7, 1677 passed 18147 weeks ago
Week 6 February 8, 1677 February 14, 1677 passed 18146 weeks ago
Week 7 February 15, 1677 February 21, 1677 passed 18145 weeks ago
Week 8 February 22, 1677 February 28, 1677 passed 18144 weeks ago
Week 9 March 1, 1677 March 7, 1677 passed 18143 weeks ago
Week 10 March 8, 1677 March 14, 1677 passed 18142 weeks ago
Week 11 March 15, 1677 March 21, 1677 passed 18141 weeks ago
Week 12 March 22, 1677 March 28, 1677 passed 18140 weeks ago
Week 13 March 29, 1677 April 4, 1677 passed 18139 weeks ago
Week 14 April 5, 1677 April 11, 1677 passed 18138 weeks ago
Week 15 April 12, 1677 April 18, 1677 passed 18137 weeks ago
Week 16 April 19, 1677 April 25, 1677 passed 18136 weeks ago
Week 17 April 26, 1677 May 2, 1677 passed 18135 weeks ago
Week 18 May 3, 1677 May 9, 1677 passed 18134 weeks ago
Week 19 May 10, 1677 May 16, 1677 passed 18133 weeks ago
Week 20 May 17, 1677 May 23, 1677 passed 18132 weeks ago
Week 21 May 24, 1677 May 30, 1677 passed 18131 weeks ago
Week 22 May 31, 1677 June 6, 1677 passed 18130 weeks ago
Week 23 June 7, 1677 June 13, 1677 passed 18129 weeks ago
Week 24 June 14, 1677 June 20, 1677 passed 18128 weeks ago
Week 25 June 21, 1677 June 27, 1677 passed 18127 weeks ago
Week 26 June 28, 1677 July 4, 1677 passed 18126 weeks ago
Week 27 July 5, 1677 July 11, 1677 passed 18125 weeks ago
Week 28 July 12, 1677 July 18, 1677 passed 18124 weeks ago
Week 29 July 19, 1677 July 25, 1677 passed 18123 weeks ago
Week 30 July 26, 1677 August 1, 1677 passed 18122 weeks ago
Week 31 August 2, 1677 August 8, 1677 passed 18121 weeks ago
Week 32 August 9, 1677 August 15, 1677 passed 18120 weeks ago
Week 33 August 16, 1677 August 22, 1677 passed 18119 weeks ago
Week 34 August 23, 1677 August 29, 1677 passed 18118 weeks ago
Week 35 August 30, 1677 September 5, 1677 passed 18117 weeks ago
Week 36 September 6, 1677 September 12, 1677 passed 18116 weeks ago
Week 37 September 13, 1677 September 19, 1677 passed 18115 weeks ago
Week 38 September 20, 1677 September 26, 1677 passed 18114 weeks ago
Week 39 September 27, 1677 October 3, 1677 passed 18113 weeks ago
Week 40 October 4, 1677 October 10, 1677 passed 18112 weeks ago
Week 41 October 11, 1677 October 17, 1677 passed 18111 weeks ago
Week 42 October 18, 1677 October 24, 1677 passed 18110 weeks ago
Week 43 October 25, 1677 October 31, 1677 passed 18109 weeks ago
Week 44 November 1, 1677 November 7, 1677 passed 18108 weeks ago
Week 45 November 8, 1677 November 14, 1677 passed 18107 weeks ago
Week 46 November 15, 1677 November 21, 1677 passed 18106 weeks ago
Week 47 November 22, 1677 November 28, 1677 passed 18105 weeks ago
Week 48 November 29, 1677 December 5, 1677 passed 18104 weeks ago
Week 49 December 6, 1677 December 12, 1677 passed 18103 weeks ago
Week 50 December 13, 1677 December 19, 1677 passed 18102 weeks ago
Week 51 December 20, 1677 December 26, 1677 passed 18101 weeks ago
Week 52 December 27, 1677 January 2, 1678 passed 18100 weeks ago