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Lunar Month

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A lunar month is one full cycle of the Moon — from one New Moon to the next, about 29.5 days. Tradition divides it into 29 lunar days, each with its own character and rhythm for rest, reflection and planning. Below is the current cycle, day by day.

The current cycle's 29 lunar days

Length of each lunar month in 2026

No two lunar months are the same length. The Moon’s orbit is elliptical, so a full cycle from one New Moon to the next runs anywhere from about 29 days 6 hours to 29 days 20 hours across the year.

New Moon (start)Next New Moon (end)Duration
29d 16h 12m
29d 13h 21m
29d 10h 26m
29d 08h 10m
29d 06h 55m
Shortest29d 06h 49m
29d 07h 50m
29d 09h 48m
29d 12h 24m
29d 15h 14m
29d 17h 48m
Longest29d 19h 30m
Average across 202629d 12h 02m

What is the difference between a month and a lunar month?

A calendar month is a fixed administrative unit. A lunar month is an observation — it starts when the Moon disappears and ends when it disappears again. The two rarely line up, and that gap is the whole point.

A lunar day is not a solar day

A lunar day runs from one moonrise to the next — not from midnight to midnight. The first lunar day is the exception: it begins at the exact moment of the New Moon and ends at the very next moonrise.

That’s why the first and last days of a cycle can last only a few minutes, while everything in between runs at a near-even length. Once the 29th or 30th lunar day closes, a new cycle begins.

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