Flag flying days in the UK
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| Date | Occasion | Flag to fly |
| 9 January | Birthday of the Duchess of Cambridge | Union |
| 20 January | Birthday of the Countess of Wessex | Union |
| 6 February | Her Majesty's Accession | Union |
| 19 February | Birthday of Duke of York | Union |
| 1 March | St David's Day | St David's cross or Welsh Dragon |
| 5 March | Cornwall - St Piran's Day | St Piran, Cornwall |
| 10 March | Birthday of the Earl of Wessex | Union |
| 11 March | Commonwealth Day | Commonwealth |
| 17 March | St Patrick's Day | St Patrick, Ireland |
| 20 March | County Durham - St Cuthbert's Day | County Durham |
| 29 March | Yorkshire West Riding - Battle of Towton | Yorkshire West Riding |
| 16 April | Orkney - St. Magnus' Day | Orkney |
| 21 April | Birthday of Her Majesty The Queen | Union |
| 23 April | St George's Day | St George, England |
| 25 April | Huntingdonshire - Birth of Oliver Cromwell | Huntingdonshire |
| 1 May | Staffordshire - Anniversary of Wedgwood Pottery | Staffordshire |
| 9 May | Guernsey - Liberation Day | Guersey |
| 11 May | Somerset - King Alfred Gathers the People | Somerset |
| 16 May | Middlesex - Battle of Albuera | Middlesex |
| 24 May | Bermuda Day | Bermuda |
| 25 May | Wessex - St. Aldhelm's Day | Wessex |
| 26 May | Kent - St Augustine's Day | Kent |
| 30 May | Anguilla Day | Anguilla |
| 1 June | Dorset - St Wite's Day | Dorset |
| 1 June | Pembrokeshire Day | Pembrokeshire |
| 2 June | Coronation day | Union |
| 4 June | Devon - St. Petroc's day | Devon |
| 5 June | Wiltshire - Wiltshire Flag Day | Wiltshire |
| 10 June | Birthday of the Duke of Edinburgh | Union |
| 14 June | Falkland Islands - Liberation day | Falkland Islands |
| 16 June | Sussex - St. Richard's Day | Sussex |
| 21 June | Shetland - Midsummer | Shetland |
| 21 June | Birthday of the Duke of Cambridge | Union |
| 22 June | Mercia - St Alban's Day | Mercia |
| 1 July | British Virgin Islands - Territory Day | British Virgin Islands |
| 5 July | Cayman Islands - Constitution Day | Cayman Islands |
| 5 July | Tynwald Day | Isle of Man |
| 14 July | Black Country - Anniversary of the Newcomen Engine | Black Country |
| 17 July | Birthday of Duchess of Cornwall | Union |
| 28 July | Buckinghamshire - Inaugural Paralympic Games | Buckinghamshire |
| 1 August | Yorkshire - Battle of Minden | Yorkshire rose |
| 5 August | Northumberland - King Oswald's Day | Northumberland |
| 15 August | Birthday of the Princess Royal | Union |
| 22 August | Yorkshire North Riding - battle of the Standard | Yorkshire North Riding |
| 24 August | Yorkshire East Riding - Birth of William Wilberforce | Yorkshire East Riding |
| 30 August | Turks and Caicos Islands - Constitution Day | Turks and Caicos Island |
| 31 August | Northumbria - St. Aidan's Day | Northumbria Flag |
| 10 September | Gibraltar - Gibraltar Day | Gibraltar |
| 13 September | Rutland - Great Assault of Gibraltar | Rutland |
| 22 September | Derbyshire - Derbyshire Flag day | Derbyshire |
| 24 September | Cumberland - Baptism of John Peel | Cumberland |
| 25 September | Monmouthshire - St Cadoc's Day | Monmouthshire |
| 29 September | Westmorland - Earldom of Westmorland Created | Westmorland |
| 1 October | Lincolnshire - Lincolnshire Uprising | Lincolnshire |
| 22 October | British Virgin Islands - St Ursula's day | British Virgin Islands |
| 24 October | United Nations Day | United Nations |
| 25 October | Northamptonshire - St Crispin's Day | Northamptonshire |
| 26 October | Essex - St. Cedd's Day | Essex |
| 10 November | Remembrance Sunday | Union |
| 14 November | Birthday of the Prince of Wales / Duke of Rothesay | Union |
| 20 November | Her Majesty's Wedding Day | Union |
| 27 November | Lancashire - Anniversary of the First Lancastrian Parliament | Lancashire |
| 28 November | Bedfordshire - Birth of John Bunyan | Bedfordshire |
| 28 November | Caernarfonshire - Death of Owain Gwynedd | Caernarfonshire |
| 30 November | St Andrews Day | St Andrew's saltaire |
|
5 December |
Alderney Homecoming Day | Alderney |