29.53 days
29.5 days.
Lunar Cycle
There is not one if you ask me.
29.53 days is a synodic period. One Full Moon to the next.
The moon rotates approximately once each time with each orbit of the earth. Since the Earth is also orbiting the sun, the period between full moons is slightly more than the period for a full rotation. It takes the moon about 27.32 days to rotate once (relative to the stars). It takes about 29.53 days for the moon to complete one lunar cycle - such as from full moon to full moon, so it makes about 1.08 rotations from one full moon to the next.
It takes about 29.5 days for the moon to go through one full cycle of phases, from new moon to full moon and back to new moon. This period is known as a lunar month or synodic month.
It takes approximately 29.5 days for the moon to go from one full moon phase to the next when viewed from Earth. This period is known as a lunar month or synodic month.
The period of rotation for the Moon (Luna) is approximately 27.3 Earth days. This means it takes about 27.3 days for the Moon to complete one full rotation on its axis.
Full moons and solstices have nothing to do with one another. Each astronomical event is independent of the other. While there can be a full moon on a solstice, it would be purely accidental.
The time from one full moon to the next is approximately 29.5 days. This period is known as a lunar month or synodic month. The variation in the lunar cycle can cause the exact timing of full moons to vary slightly each month.
Two weeks or, more precisely, about one half of the synodic period of 29.53 days.
The moon is called a blue moon every 2.7 years because this is the only time in that period of years that there is a full moon twice in a month. There was one on the second of September and one today.