UK key dates 2025

The dates that run the British year besides the bank holidays: when the clocks change, when the tax year turns over, the old quarter days and the church dates people still plan around.

The UK is on Greenwich Mean Time (GMT) now. The clocks go forward 1 hour at 1am on Sunday 28 March 2027.

When the clocks change

Year	Clocks go forward	Clocks go back
2025	Sunday 30 March	Sunday 26 October
2026	Sunday 29 March	Sunday 25 October
2027	Sunday 28 March	Sunday 31 October
2028	Sunday 26 March	Sunday 29 October

Forward 1 hour at 1am on the last Sunday in March (start of BST); back 1 hour at 2am on the last Sunday in October (back to GMT).

Tax year

Date	Day of the week	What
31 January	Friday	Self Assessment deadline online returns and payment for tax year 2023/24
5 April	Saturday	Tax year 2024/25 ends
6 April	Sunday	Tax year 2025/26 starts
31 October	Friday	Self Assessment paper returns due for tax year 2024/25

The UK tax year always runs from 6 April to 5 April, written 2025/26.

Quarter days and Scottish term days

England, Wales and Northern Ireland

Date	Day of the week	What
25 March	Tuesday	Lady Day
24 June	Tuesday	Midsummer Day
29 September	Monday	Michaelmas
25 December	Thursday	Christmas

Scotland

Date	Day of the week	What
28 February	Friday	Candlemas
28 May	Wednesday	Whitsunday
28 August	Thursday	Lammas
28 November	Friday	Martinmas

Some leases and rents still fall due on these days. Since the Term and Quarter Days (Scotland) Act 1990, the Scottish term days are always the 28th.

Pancake Day and Mothering Sunday

Date	Day of the week	What
4 March	Tuesday	Pancake Day (Shrove Tuesday)
30 March	Sunday	Mothering Sunday three weeks before Easter Sunday
20 April	Sunday	Easter Sunday

Both move with Easter. Mothering Sunday is the UK Mother's Day, so it is not the same date as Mother's Day in the US.