Odd Friday in 2021, Ireland
| week 53 | January 1, 2021 |
| week 1 | January 8, 2021 |
| week 3 | January 22, 2021 |
| week 5 | February 5, 2021 |
| week 7 | February 19, 2021 |
| week 9 | March 5, 2021 |
| week 11 | March 19, 2021 |
| week 13 | April 2, 2021 |
| week 15 | April 16, 2021 |
| week 17 | April 30, 2021 |
| week 19 | May 14, 2021 |
| week 21 | May 28, 2021 |
| week 23 | June 11, 2021 |
| week 25 | June 25, 2021 |
| week 27 | July 9, 2021 |
| week 29 | July 23, 2021 |
| week 31 | August 6, 2021 |
| week 33 | August 20, 2021 |
| week 35 | September 3, 2021 |
| week 37 | September 17, 2021 |
| week 39 | October 1, 2021 |
| week 41 | October 15, 2021 |
| week 43 | October 29, 2021 |
| week 45 | November 12, 2021 |
| week 47 | November 26, 2021 |
| week 49 | December 10, 2021 |
| week 51 | December 24, 2021 |
Even: even Monday 2021, even Tuesday 2021, even Wednesday 2021, even Thursday 2021, even Friday 2021, even Saturday 2021, even Sunday 2021
Odd: odd Monday 2021, odd Tuesday 2021, odd Wednesday 2021, odd Thursday 2021, odd Friday 2021, odd Saturday 2021, odd Sunday 2021