Menstruation
About twenty nine and one half days. (It's phases, not phrases).
29.5 days from new moon to new moon.
29.53 days (rounded)
29.5 days
a day or a year
28 days
about 5 years
how long did it take to build the half moon
29.5 days.
It takes the moon 29 and a half days to go through each cycle.
360 days
to what