There is no "old moon". The opposite of a new moon is a full moon.
Where I live, there is a distinct no-moon phase. Thus I cannot see any new moon within the old moon.
approximately 28 days
A new moon is a phase of the moon, it's where you can't see the moon. It usually happens at the beginning of the month.... Umm, I don't think there is such thing as an "old moon". Or I haven't learned anything about it yet..
he is 18 years old
about 15 days
yes it does.
61
nineteen
The full lunar cycle is roughly 4 weeks, and from full-moon to new-moon is half the cycle, so it would take (roughly) 2 weeks to go from full to new moon.
It takes approximately 14 days to go from a new moon to the next full moon.
14.5 days.
15 years old!