Dates for flying the Union Flag on UK government buildings in 2020
- 9 January Birthday of the Duchess of Cambridge
- 20 January Birthday of the Countess of Wessex
- 6 February Her Majesty’s Accession
- 19 February Birthday of the Duke of York
- 1 March St David’s Day (in Wales only, see note 1)
- 10 March Birthday of the Earl of Wessex
- 9 March Commonwealth Day (second Monday in March)
- 17 March St. Patrick’s Day (in Northern Ireland only, see note 4)
- 21 April Birthday of Her Majesty the Queen
- 23 April St George’s Day (in England only, see note 1)
- 2 June Coronation Day
- 13 June Official celebration of Her Majesty’s birthday
- 10 June Birthday of the Duke of Edinburgh
- 21 June Birthday of the Duke of Cambridge
- 17 July Birthday of the Duchess of Cornwall
- 15 August Birthday of the Princess Royal
- 8 November Remembrance Day (second Sunday in November, see note 2)
- 14 November Birthday of the Prince of Wales
- 20 November Her Majesty’s Wedding Day
- 30 November St Andrew’s Day (in Scotland only, see note 1)
- The day of the opening of a Session of the Houses of Parliament by Her Majesty (see note 3)
- The day of the prorogation of a Session of the Houses of Parliament by Her Majesty (see note 3)
- Where a building has two or more flag poles the appropriate national flag may be flown in addition to the union flag but not in a superior position. UK government buildings within the wider Whitehall area may fly the national flags alongside the union flag on their appropriate saint days.
- Flags should be flown at full mast all day.
- Flags should be flown on this day even if Her Majesty does not perform the ceremony in person. Flags should only be flown in the Greater London area.
- The Union Flag only should be flown.