a red-letter day

a day that is very important or very special The day our daughter was born was a real red-letter day for us.

Name	Pronounced	Usage
Amandus	-	Late Roman
Cyan	SIE-an	English (Rare)
Idelle	ie-DEL	English (Rare)
Galadriel	gə-LAD-ree-əl (English)	Literature
Atropos	-	Greek Mythology
Keghart	-	Armenian