The exact number varies, but roughly 29.5 days. The link will explain why.
It takes the moon 29 days or about 1 month to orbit the earth.
About 1 month
27.3 days (a sidereal month)
The moon revolves around earth once in 27.32 days. It displays a full cycle of phases in 29.53 days.
The moon orbits around the Earth approximately once every 27.3 days. This period is known as a synodic month or lunar month.
It takes precisely 27.3 Days for the moon to orbit the earth.
A month (27 days 8 hours).
The Moon completes its orbit around the Earth in approximately 27.3 days (which is also called a sidereal month).
27
The moon takes approximately 27.3 days to complete one orbit around Earth. This period is known as the sidereal month. However, because Earth is also moving around the Sun, it takes about 29.5 days for the moon to complete a full cycle of phases - this is known as the synodic month.
1 month and 22,21,20 or 19 days depending on the month. But, taking a month to be 30 days, it would be 1 month and 20 days.
30 days are in the month of September