christian holy day

NOUN
18 LETTERS · STARTS WITH C

christian holy day is a valid 18-letter word worth 31 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
C3H4R1I1S1T1I1A1N1H4O1L1Y4D2A1Y4
3 + 4 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 4 + 1 + 1 + 4 + 0 + 2 + 1 + 4 =31 PTS
DOUBLE WORD → 62TRIPLE WORD → 93
MEANING

What does christian holy day mean?