Mother's Day in 2025 falls on March 30 in the UK and May 11 in the US. The holiday originated in the 1600s as a religious observance, where people visited their "mother church." Over time, it evolved into a day to honor mothers, with traditions like giving gifts. In the UK, the date varies each year as it is tied to the Christian calendar, specifically the fourth Sunday of Lent. In the US, it is fixed on the second Sunday in May and is more focused on family.