Number of weeks in 2010 year is 53 weeks
Weeks are according Brazil calendar rules, Sunday first day and weeks are Sunday to Saturday

Week # From Date To Date Weeks from Now
Week 1 December 27, 2009 January 2, 2010 passed 646 weeks ago
Week 2 January 3, 2010 January 9, 2010 passed 645 weeks ago
Week 3 January 10, 2010 January 16, 2010 passed 644 weeks ago
Week 4 January 17, 2010 January 23, 2010 passed 643 weeks ago
Week 5 January 24, 2010 January 30, 2010 passed 642 weeks ago
Week 6 January 31, 2010 February 6, 2010 passed 641 weeks ago
Week 7 February 7, 2010 February 13, 2010 passed 640 weeks ago
Week 8 February 14, 2010 February 20, 2010 passed 639 weeks ago
Week 9 February 21, 2010 February 27, 2010 passed 638 weeks ago
Week 10 February 28, 2010 March 6, 2010 passed 637 weeks ago
Week 11 March 7, 2010 March 13, 2010 passed 636 weeks ago
Week 12 March 14, 2010 March 20, 2010 passed 635 weeks ago
Week 13 March 21, 2010 March 27, 2010 passed 634 weeks ago
Week 14 March 28, 2010 April 3, 2010 passed 633 weeks ago
Week 15 April 4, 2010 April 10, 2010 passed 632 weeks ago
Week 16 April 11, 2010 April 17, 2010 passed 631 weeks ago
Week 17 April 18, 2010 April 24, 2010 passed 630 weeks ago
Week 18 April 25, 2010 May 1, 2010 passed 629 weeks ago
Week 19 May 2, 2010 May 8, 2010 passed 628 weeks ago
Week 20 May 9, 2010 May 15, 2010 passed 627 weeks ago
Week 21 May 16, 2010 May 22, 2010 passed 626 weeks ago
Week 22 May 23, 2010 May 29, 2010 passed 625 weeks ago
Week 23 May 30, 2010 June 5, 2010 passed 624 weeks ago
Week 24 June 6, 2010 June 12, 2010 passed 623 weeks ago
Week 25 June 13, 2010 June 19, 2010 passed 622 weeks ago
Week 26 June 20, 2010 June 26, 2010 passed 621 weeks ago
Week 27 June 27, 2010 July 3, 2010 passed 620 weeks ago
Week 28 July 4, 2010 July 10, 2010 passed 619 weeks ago
Week 29 July 11, 2010 July 17, 2010 passed 618 weeks ago
Week 30 July 18, 2010 July 24, 2010 passed 617 weeks ago
Week 31 July 25, 2010 July 31, 2010 passed 616 weeks ago
Week 32 August 1, 2010 August 7, 2010 passed 615 weeks ago
Week 33 August 8, 2010 August 14, 2010 passed 614 weeks ago
Week 34 August 15, 2010 August 21, 2010 passed 613 weeks ago
Week 35 August 22, 2010 August 28, 2010 passed 612 weeks ago
Week 36 August 29, 2010 September 4, 2010 passed 611 weeks ago
Week 37 September 5, 2010 September 11, 2010 passed 610 weeks ago
Week 38 September 12, 2010 September 18, 2010 passed 609 weeks ago
Week 39 September 19, 2010 September 25, 2010 passed 608 weeks ago
Week 40 September 26, 2010 October 2, 2010 passed 607 weeks ago
Week 41 October 3, 2010 October 9, 2010 passed 606 weeks ago
Week 42 October 10, 2010 October 16, 2010 passed 605 weeks ago
Week 43 October 17, 2010 October 23, 2010 passed 604 weeks ago
Week 44 October 24, 2010 October 30, 2010 passed 603 weeks ago
Week 45 October 31, 2010 November 6, 2010 passed 602 weeks ago
Week 46 November 7, 2010 November 13, 2010 passed 601 weeks ago
Week 47 November 14, 2010 November 20, 2010 passed 600 weeks ago
Week 48 November 21, 2010 November 27, 2010 passed 599 weeks ago
Week 49 November 28, 2010 December 4, 2010 passed 598 weeks ago
Week 50 December 5, 2010 December 11, 2010 passed 597 weeks ago
Week 51 December 12, 2010 December 18, 2010 passed 596 weeks ago
Week 52 December 19, 2010 December 25, 2010 passed 595 weeks ago
Week 53 December 26, 2010 January 1, 2011 passed 594 weeks ago