Number of weeks in 1820 year is 53 weeks
Weeks are according Tunisia calendar rules, Monday first day and weeks are Monday to Sunday

Week # From Date To Date Weeks from Now
Week 1 December 27, 1819 January 2, 1820 passed 10690 weeks ago
Week 2 January 3, 1820 January 9, 1820 passed 10689 weeks ago
Week 3 January 10, 1820 January 16, 1820 passed 10688 weeks ago
Week 4 January 17, 1820 January 23, 1820 passed 10687 weeks ago
Week 5 January 24, 1820 January 30, 1820 passed 10686 weeks ago
Week 6 January 31, 1820 February 6, 1820 passed 10685 weeks ago
Week 7 February 7, 1820 February 13, 1820 passed 10684 weeks ago
Week 8 February 14, 1820 February 20, 1820 passed 10683 weeks ago
Week 9 February 21, 1820 February 27, 1820 passed 10682 weeks ago
Week 10 February 28, 1820 March 5, 1820 passed 10681 weeks ago
Week 11 March 6, 1820 March 12, 1820 passed 10680 weeks ago
Week 12 March 13, 1820 March 19, 1820 passed 10679 weeks ago
Week 13 March 20, 1820 March 26, 1820 passed 10678 weeks ago
Week 14 March 27, 1820 April 2, 1820 passed 10677 weeks ago
Week 15 April 3, 1820 April 9, 1820 passed 10676 weeks ago
Week 16 April 10, 1820 April 16, 1820 passed 10675 weeks ago
Week 17 April 17, 1820 April 23, 1820 passed 10674 weeks ago
Week 18 April 24, 1820 April 30, 1820 passed 10673 weeks ago
Week 19 May 1, 1820 May 7, 1820 passed 10672 weeks ago
Week 20 May 8, 1820 May 14, 1820 passed 10671 weeks ago
Week 21 May 15, 1820 May 21, 1820 passed 10670 weeks ago
Week 22 May 22, 1820 May 28, 1820 passed 10669 weeks ago
Week 23 May 29, 1820 June 4, 1820 passed 10668 weeks ago
Week 24 June 5, 1820 June 11, 1820 passed 10667 weeks ago
Week 25 June 12, 1820 June 18, 1820 passed 10666 weeks ago
Week 26 June 19, 1820 June 25, 1820 passed 10665 weeks ago
Week 27 June 26, 1820 July 2, 1820 passed 10664 weeks ago
Week 28 July 3, 1820 July 9, 1820 passed 10663 weeks ago
Week 29 July 10, 1820 July 16, 1820 passed 10662 weeks ago
Week 30 July 17, 1820 July 23, 1820 passed 10661 weeks ago
Week 31 July 24, 1820 July 30, 1820 passed 10660 weeks ago
Week 32 July 31, 1820 August 6, 1820 passed 10659 weeks ago
Week 33 August 7, 1820 August 13, 1820 passed 10658 weeks ago
Week 34 August 14, 1820 August 20, 1820 passed 10657 weeks ago
Week 35 August 21, 1820 August 27, 1820 passed 10656 weeks ago
Week 36 August 28, 1820 September 3, 1820 passed 10655 weeks ago
Week 37 September 4, 1820 September 10, 1820 passed 10654 weeks ago
Week 38 September 11, 1820 September 17, 1820 passed 10653 weeks ago
Week 39 September 18, 1820 September 24, 1820 passed 10652 weeks ago
Week 40 September 25, 1820 October 1, 1820 passed 10651 weeks ago
Week 41 October 2, 1820 October 8, 1820 passed 10650 weeks ago
Week 42 October 9, 1820 October 15, 1820 passed 10649 weeks ago
Week 43 October 16, 1820 October 22, 1820 passed 10648 weeks ago
Week 44 October 23, 1820 October 29, 1820 passed 10647 weeks ago
Week 45 October 30, 1820 November 5, 1820 passed 10646 weeks ago
Week 46 November 6, 1820 November 12, 1820 passed 10645 weeks ago
Week 47 November 13, 1820 November 19, 1820 passed 10644 weeks ago
Week 48 November 20, 1820 November 26, 1820 passed 10643 weeks ago
Week 49 November 27, 1820 December 3, 1820 passed 10642 weeks ago
Week 50 December 4, 1820 December 10, 1820 passed 10641 weeks ago
Week 51 December 11, 1820 December 17, 1820 passed 10640 weeks ago
Week 52 December 18, 1820 December 24, 1820 passed 10639 weeks ago
Week 53 December 25, 1820 December 31, 1820 passed 10638 weeks ago