Oxfordshire Day takes place on 19 October, the principal feast day of St Frideswide (c.650–19 October 727).
Frideswide is the patron saint both of the city of Oxford and of the University of Oxford.
She was an English princess and abbess, who by legend founded a monastery later incorporated into Christ Church, Oxford.
The Virgin Islands celebrate the feast of St Ursula annually on 22 October.
Christopher Columbus named the Virgin Islands in honour of the saint in 1493.
United Nations Day takes place annually on 24 October, marking the entry into force of the UN Charter (1945).
The UK Government, Scottish Government and Senedd Cymru do not currently list it as a flag flying day.
Northamptonshire Day takes place annually on 25 October, the feast of St Crispin.
St Crispin is the patron saint of shoemakers, cobblers and leather workers – an important industry in the county.
This date was selected by public vote from a shortlist of five.
The four other options were:
- 5 January – death of Philippa of Lancaster (1430), queen of Denmark, Norway and Sweden
- 26 February – radar first demonstrated in Upper Stowe (1935)
- 31 May – death of Waltheof (1076), 1st Earl of Northampton, the last of the Anglo-Saxon earls
- 28 July – battle of Talavera (1809), battle honour of the Northamptonshire Regiment, the ‘Heroes of Talavera’
Essex Day takes place annually on 26 October, the feast of St Cedd.
Cedd (c.620–64) was an Anglo-Saxon monk and bishop who was an evangelist among the East Saxons.
The British Antarctic Territory celebrates the Birthday of HM The King annually on 14 November.
The Falkland Islands celebrate the Birthday of HM The King annually on 14 November.
The Birthday of HM The King is listed as a flag flying day by UK government guidance.
The Union Flag is specified.
https://www.gov.uk/guidance/designated-days-for-union-flag-flying
The Birthday of HM The King is also listed as a flag flying day by Scottish government guidance.
The Scottish Saltire is specified.
https://www.gov.scot/publications/flag-flying-on-government-buildings/
The International Transgender Day of Remembrance honours those murdered as a result of transphobia.
It is an official flag flying day in Scotland but not in the rest of the UK.
https://www.gov.scot/publications/flag-flying-on-government-buildings/
Lancashire Day has taken place annually on 27 November since 1996.
It commemorates the day when Lancashire first sent representatives to Parliament, the Model Parliament of King Edward I (1295).