The day is lovely.

The season or time made up of the twelve days between Christmas and Epiphany; Christmas season, Christmas time, Christmastide, Twelvetide. The Christmas season traditionally ended with the feast of the Epiphany on January 6.

(idiomatic) Some period of time, such as a term of employment or a lifetime, is coming to an end.

Alternative form of St. Patrick's Day

A Roman Catholic holiday commemorating Saint Patrick, the patron saint of Ireland on 17ᵗʰ March.

The saint's day of Saint George, the patron saint of England, celebrated on April 23ʳᵈ.

(literally) A day when one's hair seems unmanageable. / (idiomatic, by extension) A day when things seem to be unmanageable or go wrong.

Used other than figuratively or idiomatically: see have, a, nice, day. / (US, Canada, rather formal). en

(Christianity) An annual feast day celebrating the faithful departed on the second day of November, immediately following All Saints' Day. / (uncommon) Synonym of Tomb Sweeping Day, a Chinese holiday.

A day marked in red on calendars; a church feast day. / (idiomatic) A particularly significant day; a day of personal or sectarian celebration.