plural of leap day

Work done where the worker is hired and paid one day at a time, with no promise that more work will be available in the future.

A measure of heating or cooling, computed as the integral of a function of time that generally varies with temperature.

plural of degree day

(Canada) A holiday commemorating the birthdays of Queen Victoria and the reigning monarch of Canada, falling on the last Monday before May 25.

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

A period that was a relatively long time ago; the distant past.

The day on which a President and a Vice-President of the United States takes office, now on January 20 after a Presidential election, before 1936 on March 4.

plural of feast day

plural of D-Day