You're close! A lunar month is the period of time from one new moon to the next.

Here's why:

* New Moon: This is when the Moon is completely hidden from our view because it's between the Earth and the Sun.

* Lunar Cycle: The Moon orbits the Earth, and it takes roughly 29.5 days to complete one full cycle. This cycle is what defines a lunar month.

So, a lunar month isn't just any random day-to-day period, it's specifically tied to the phases of the Moon.