Once every 27 days. You would think that it would be 29.5 days, because that's how long it is from full moon to full moon, but it's 27 days. The extra 2.5 days is because the Earth travels along in its orbit around the Sun while the Moon is going around the Earth, and it takes the Moon an additional 2.5 days to "catch up" to be in the same relative position.
about 15 days
1 day
29.5 days
27 days
twice as long as walking half the moon or half as long as walking it twice.
If you mean 'the Earth' the answer is a day.
it takes about 365 days to rotate fully around earth.
It would take 24 hours and 37 minuets for mars to rotate once. It would take 687 days for mars to rotate around the sun. -Rachel Hagara
how long did it take to build the half moon
to what
A long time
A month
by that u mean........?
3weeks
14.77 days
14.5 days.
29.53 days