Public holidays
1400, United Kingdom, Ireland
| # | Date | Public holiday |
|---|---|---|
| 1 | Wednesday, 1 January 1400 | New Year's Day |
| 2 | Monday, 17 March 1400 | St. Patrick's Day |
| 3 | Monday, 21 April 1400 | Easter Monday |
| 4 | Monday, 5 May 1400 | Early May Bank Holiday |
| 5 | Monday, 2 June 1400 | June Bank Holiday |
| 6 | Monday, 4 August 1400 | Summer Bank Holiday |
| 7 | Monday, 27 October 1400 | October Bank Holiday |
| 8 | Thursday, 25 December 1400 | Christmas Day |
| 9 | Friday, 26 December 1400 | St. Stephen's Day |