How long is the lunar cycle?

Every lunar cycle is 27 days, 7 hours, and 43 minutes, and this time means that the moon requires about 28 days to complete a full orbit around the earth. During this time, the moon completes several phases, which change its appearance and the pattern of movement through the sky. There are many phases of the moon, and it would be impossible to figure out precisely how long each period lasts.

The reason is that the brightness of the moon steadily declines and elevates consistently. However, the phase cycles of the moon are shorter than a full calendar month. The phase of the moon rising at the start of every month happens before the end of the month.