Public holidays
1100, United Kingdom, Ireland
| # | Date | Public holiday |
|---|---|---|
| 1 | Monday, 1 January 1100 | New Year's Day |
| 2 | Saturday, 17 March 1100 | St. Patrick's Day |
| 3 | Monday, 19 March 1100 | St. Patrick's Day (substitute day) |
| 4 | Monday, 9 April 1100 | Easter Monday |
| 5 | Monday, 7 May 1100 | Early May Bank Holiday |
| 6 | Monday, 4 June 1100 | June Bank Holiday |
| 7 | Monday, 6 August 1100 | Summer Bank Holiday |
| 8 | Monday, 29 October 1100 | October Bank Holiday |
| 9 | Tuesday, 25 December 1100 | Christmas Day |
| 10 | Wednesday, 26 December 1100 | St. Stephen's Day |