The feast day of Saint Andrew, celebrated on November 30.

Alternative spelling of April Fools' Day

The first day in April, when tricks and practical jokes are traditionally played

Alternative spelling of Saint Valentine's Day

(idiomatic) Something that generates interest for a limited time and is then abandoned.

Alternative form of All Saints' Day

A holiday in remembrance of Saint Valentine, February 14th, celebrated by sending cards or similar tokens of love.

(philately) A letter or card with new stamp, posted on the day that the stamp was first issued.

(sports) A three-phase equestrian sport consisting of dressage, cross country, and show jumping.

plural of Latter-day Saint