A school day set aside for athletics events.

A day celebrating George Washington and other presidents, a federal holiday in the United States, celebrated on the third Monday of February (formerly on the 22nd of February).

plural of feast day

A day on which a cruise ship remains at sea all day (i.e. passengers cannot leave the ship).

plural of Anzac Day

plural of D-Day

plural of day-tripper

Someone who takes a day trip.

Current; of the present. / (informal) Designating a present-day version of someone or something in history.

(idiomatic) An excursion, returning home on the same day.