Definition:Time/Unit/Lunar Month

Definition

The lunar month is defined as the length of time between $2$ new moons.

$1$ lunar month $\approx 29 \cdotp 530588$ days

or:

$1$ lunar month $\approx 29$ days, $12$ hours, $44$ minutes and $2 \cdotp 8$ seconds.

Linguistic Note

The word month derives from the word moon, from its definition as the approximate duration of one full cycle of phases from new moon to new moon.

Sources

• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $365 \cdotp 2422$
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $365 \cdotp 24219 \, 878$