Week Numbers 1667 in Costa Rica
Number of weeks in 1667 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, 1666 | January 1, 1667 | passed 18674 weeks ago |
| Week 2 | January 2, 1667 | January 8, 1667 | passed 18673 weeks ago |
| Week 3 | January 9, 1667 | January 15, 1667 | passed 18672 weeks ago |
| Week 4 | January 16, 1667 | January 22, 1667 | passed 18671 weeks ago |
| Week 5 | January 23, 1667 | January 29, 1667 | passed 18670 weeks ago |
| Week 6 | January 30, 1667 | February 5, 1667 | passed 18669 weeks ago |
| Week 7 | February 6, 1667 | February 12, 1667 | passed 18668 weeks ago |
| Week 8 | February 13, 1667 | February 19, 1667 | passed 18667 weeks ago |
| Week 9 | February 20, 1667 | February 26, 1667 | passed 18666 weeks ago |
| Week 10 | February 27, 1667 | March 5, 1667 | passed 18665 weeks ago |
| Week 11 | March 6, 1667 | March 12, 1667 | passed 18664 weeks ago |
| Week 12 | March 13, 1667 | March 19, 1667 | passed 18663 weeks ago |
| Week 13 | March 20, 1667 | March 26, 1667 | passed 18662 weeks ago |
| Week 14 | March 27, 1667 | April 2, 1667 | passed 18661 weeks ago |
| Week 15 | April 3, 1667 | April 9, 1667 | passed 18660 weeks ago |
| Week 16 | April 10, 1667 | April 16, 1667 | passed 18659 weeks ago |
| Week 17 | April 17, 1667 | April 23, 1667 | passed 18658 weeks ago |
| Week 18 | April 24, 1667 | April 30, 1667 | passed 18657 weeks ago |
| Week 19 | May 1, 1667 | May 7, 1667 | passed 18656 weeks ago |
| Week 20 | May 8, 1667 | May 14, 1667 | passed 18655 weeks ago |
| Week 21 | May 15, 1667 | May 21, 1667 | passed 18654 weeks ago |
| Week 22 | May 22, 1667 | May 28, 1667 | passed 18653 weeks ago |
| Week 23 | May 29, 1667 | June 4, 1667 | passed 18652 weeks ago |
| Week 24 | June 5, 1667 | June 11, 1667 | passed 18651 weeks ago |
| Week 25 | June 12, 1667 | June 18, 1667 | passed 18650 weeks ago |
| Week 26 | June 19, 1667 | June 25, 1667 | passed 18649 weeks ago |
| Week 27 | June 26, 1667 | July 2, 1667 | passed 18648 weeks ago |
| Week 28 | July 3, 1667 | July 9, 1667 | passed 18647 weeks ago |
| Week 29 | July 10, 1667 | July 16, 1667 | passed 18646 weeks ago |
| Week 30 | July 17, 1667 | July 23, 1667 | passed 18645 weeks ago |
| Week 31 | July 24, 1667 | July 30, 1667 | passed 18644 weeks ago |
| Week 32 | July 31, 1667 | August 6, 1667 | passed 18643 weeks ago |
| Week 33 | August 7, 1667 | August 13, 1667 | passed 18642 weeks ago |
| Week 34 | August 14, 1667 | August 20, 1667 | passed 18641 weeks ago |
| Week 35 | August 21, 1667 | August 27, 1667 | passed 18640 weeks ago |
| Week 36 | August 28, 1667 | September 3, 1667 | passed 18639 weeks ago |
| Week 37 | September 4, 1667 | September 10, 1667 | passed 18638 weeks ago |
| Week 38 | September 11, 1667 | September 17, 1667 | passed 18637 weeks ago |
| Week 39 | September 18, 1667 | September 24, 1667 | passed 18636 weeks ago |
| Week 40 | September 25, 1667 | October 1, 1667 | passed 18635 weeks ago |
| Week 41 | October 2, 1667 | October 8, 1667 | passed 18634 weeks ago |
| Week 42 | October 9, 1667 | October 15, 1667 | passed 18633 weeks ago |
| Week 43 | October 16, 1667 | October 22, 1667 | passed 18632 weeks ago |
| Week 44 | October 23, 1667 | October 29, 1667 | passed 18631 weeks ago |
| Week 45 | October 30, 1667 | November 5, 1667 | passed 18630 weeks ago |
| Week 46 | November 6, 1667 | November 12, 1667 | passed 18629 weeks ago |
| Week 47 | November 13, 1667 | November 19, 1667 | passed 18628 weeks ago |
| Week 48 | November 20, 1667 | November 26, 1667 | passed 18627 weeks ago |
| Week 49 | November 27, 1667 | December 3, 1667 | passed 18626 weeks ago |
| Week 50 | December 4, 1667 | December 10, 1667 | passed 18625 weeks ago |
| Week 51 | December 11, 1667 | December 17, 1667 | passed 18624 weeks ago |
| Week 52 | December 18, 1667 | December 24, 1667 | passed 18623 weeks ago |
| Week 53 | December 25, 1667 | December 31, 1667 | passed 18622 weeks ago |