lunar month
moon ***
lunation
synodic month

In contrast, the synodic month is the time it takes the Moon to reach the same phase, which takes about 29.5 days.

The synodic month, i.e. the mean period for the phases of the Moon.

The average length of the synodic month is 29.530589 days.

The mean period of the lunar month (precisely, the synodic month) is very close to 29.5 days.

The period between two new moons is a synodic month.

A tithi is the 30th part of the synodic month.

The Metonic cycle has 19 tropical years and 235 synodic months in 6940 days.

A total of 235 synodic months add up to 19 years.

The white disk rotates once in a synodic month.

The first and last eclipse in each sequence is separated by one synodic month.