How to measure time of a month

Explanation:As a calendrical period, the month is derived from the lunation-i. e., the time elapsing between successive new moons (or other phases of the moon). A total of 12 lunations amounts to 354 days and is, roughly, a year. A period of 12 lunations was therefore used by some primitive peoples to make their calendrical year.

1 Month = about 30 Days = about 4 Weeks