Week Numbers 1780 in Costa Rica
Number of weeks in 1780 year is 53 weeks
Weeks are according Costa Rica calendar rules, Sunday first day and weeks are Sunday to Saturday
| Week # | From Date | To Date | Weeks from Now |
|---|---|---|---|
| Week 1 | December 26, 1779 | January 1, 1780 | passed 12845 weeks ago |
| Week 2 | January 2, 1780 | January 8, 1780 | passed 12844 weeks ago |
| Week 3 | January 9, 1780 | January 15, 1780 | passed 12843 weeks ago |
| Week 4 | January 16, 1780 | January 22, 1780 | passed 12842 weeks ago |
| Week 5 | January 23, 1780 | January 29, 1780 | passed 12841 weeks ago |
| Week 6 | January 30, 1780 | February 5, 1780 | passed 12840 weeks ago |
| Week 7 | February 6, 1780 | February 12, 1780 | passed 12839 weeks ago |
| Week 8 | February 13, 1780 | February 19, 1780 | passed 12838 weeks ago |
| Week 9 | February 20, 1780 | February 26, 1780 | passed 12837 weeks ago |
| Week 10 | February 27, 1780 | March 4, 1780 | passed 12836 weeks ago |
| Week 11 | March 5, 1780 | March 11, 1780 | passed 12835 weeks ago |
| Week 12 | March 12, 1780 | March 18, 1780 | passed 12834 weeks ago |
| Week 13 | March 19, 1780 | March 25, 1780 | passed 12833 weeks ago |
| Week 14 | March 26, 1780 | April 1, 1780 | passed 12832 weeks ago |
| Week 15 | April 2, 1780 | April 8, 1780 | passed 12831 weeks ago |
| Week 16 | April 9, 1780 | April 15, 1780 | passed 12830 weeks ago |
| Week 17 | April 16, 1780 | April 22, 1780 | passed 12829 weeks ago |
| Week 18 | April 23, 1780 | April 29, 1780 | passed 12828 weeks ago |
| Week 19 | April 30, 1780 | May 6, 1780 | passed 12827 weeks ago |
| Week 20 | May 7, 1780 | May 13, 1780 | passed 12826 weeks ago |
| Week 21 | May 14, 1780 | May 20, 1780 | passed 12825 weeks ago |
| Week 22 | May 21, 1780 | May 27, 1780 | passed 12824 weeks ago |
| Week 23 | May 28, 1780 | June 3, 1780 | passed 12823 weeks ago |
| Week 24 | June 4, 1780 | June 10, 1780 | passed 12822 weeks ago |
| Week 25 | June 11, 1780 | June 17, 1780 | passed 12821 weeks ago |
| Week 26 | June 18, 1780 | June 24, 1780 | passed 12820 weeks ago |
| Week 27 | June 25, 1780 | July 1, 1780 | passed 12819 weeks ago |
| Week 28 | July 2, 1780 | July 8, 1780 | passed 12818 weeks ago |
| Week 29 | July 9, 1780 | July 15, 1780 | passed 12817 weeks ago |
| Week 30 | July 16, 1780 | July 22, 1780 | passed 12816 weeks ago |
| Week 31 | July 23, 1780 | July 29, 1780 | passed 12815 weeks ago |
| Week 32 | July 30, 1780 | August 5, 1780 | passed 12814 weeks ago |
| Week 33 | August 6, 1780 | August 12, 1780 | passed 12813 weeks ago |
| Week 34 | August 13, 1780 | August 19, 1780 | passed 12812 weeks ago |
| Week 35 | August 20, 1780 | August 26, 1780 | passed 12811 weeks ago |
| Week 36 | August 27, 1780 | September 2, 1780 | passed 12810 weeks ago |
| Week 37 | September 3, 1780 | September 9, 1780 | passed 12809 weeks ago |
| Week 38 | September 10, 1780 | September 16, 1780 | passed 12808 weeks ago |
| Week 39 | September 17, 1780 | September 23, 1780 | passed 12807 weeks ago |
| Week 40 | September 24, 1780 | September 30, 1780 | passed 12806 weeks ago |
| Week 41 | October 1, 1780 | October 7, 1780 | passed 12805 weeks ago |
| Week 42 | October 8, 1780 | October 14, 1780 | passed 12804 weeks ago |
| Week 43 | October 15, 1780 | October 21, 1780 | passed 12803 weeks ago |
| Week 44 | October 22, 1780 | October 28, 1780 | passed 12802 weeks ago |
| Week 45 | October 29, 1780 | November 4, 1780 | passed 12801 weeks ago |
| Week 46 | November 5, 1780 | November 11, 1780 | passed 12800 weeks ago |
| Week 47 | November 12, 1780 | November 18, 1780 | passed 12799 weeks ago |
| Week 48 | November 19, 1780 | November 25, 1780 | passed 12798 weeks ago |
| Week 49 | November 26, 1780 | December 2, 1780 | passed 12797 weeks ago |
| Week 50 | December 3, 1780 | December 9, 1780 | passed 12796 weeks ago |
| Week 51 | December 10, 1780 | December 16, 1780 | passed 12795 weeks ago |
| Week 52 | December 17, 1780 | December 23, 1780 | passed 12794 weeks ago |
| Week 53 | December 24, 1780 | December 30, 1780 | passed 12793 weeks ago |