how do they decide when mother's day is uk

They decide UK Mother’s Day by the church calendar: it’s always the fourth Sunday of Lent, exactly three weeks before Easter Sunday each year.

How the date is chosen

• The UK version is formally called Mothering Sunday and is tied to the Christian liturgical calendar.

• Lent starts on Ash Wednesday; if you count forward, Mothering Sunday is the 4th Sunday in Lent.

• Easter is a “moveable feast” (based on the lunar cycle), so when Easter shifts, the 4th Sunday of Lent shifts too, which is why Mother’s Day lands on a different March/April date each year.

Simple rule: find Easter Sunday, go back three Sundays – that’s UK Mother’s Day.

A quick bit of background

• Historically, it was the day people went back to their “mother church” rather than originally being about mums in the modern sense.

• Over time it blended with the American-style Mother’s Day idea and became a day to celebrate mums with cards, flowers, and family time.

Information gathered from public forums or data available on the internet and portrayed here.