Synonym of any day

Alternative form of teacher workday

plural of teacher work day

Alternative form of in all one's born days

(ecology) The calculated illustrative calendar date on which humanity's resource consumption for the year exceeds Earth's capacity to regenerate those resources that year.

(Catholicism) A feast day on which the faithful are expected to attend Mass.

plural of holy day of obligation

That was a particularly pleasant, exciting, or noteworthy time.

Alternative form of nine day wonder

plural of nine days wonder