While the dates for Christmas remain the same each year, Easter can fall any time between March 22 and April 25.
The four-day weekend returns in 2018 two weeks earlier than this spring.
When is Easter in 2018?
Good Friday will fall on Friday March 30.
Easter Saturday is March 31.
Easter Sunday or Easter Day - the main day of the Christian festival, marking the day Jesus rose from the dead - is on Sunday April 1 (yes, the same as April Fool's Day).
And then Easter Monday is on April 2.
Good Friday and Easter Monday are both public holidays in the UK.