(slang, Australia, New Zealand) A very long time ago; as far back as one can remember.

Starting during daylight hours and continuing until after dark.

plural of Twelfth Day.

(Christianity) Synonym of Epiphany (“an annual Christian feast on the twelfth day after Christmas Day (6 January) celebrating the appearance of Jesus Christ to the Magi”).

(Australia) A public holiday held in Australia for the annual agricultural show in a state.

plural of show day

To fix the date of an event, especially one's marriage.

Alternative form of schoolday

plural of school day / Alternative form of schooldays

Alternative form of Pi Day.