starting time

NOUN
13 LETTERS · STARTS WITH S

starting time is a valid 13-letter word worth 15 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1T1A1R1T1I1N1G2T1I1M3E1
1 + 1 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 3 + 1 =15 PTS
DOUBLE WORD → 30TRIPLE WORD → 45
MEANING

What does starting time mean?