how often does a lunar eclipse occur

A lunar eclipse usually happens about 1–2 times per year , somewhere on Earth, though the exact number can vary slightly from year to year.

Quick Scoop: Key Facts

• Lunar eclipses can occur only at full moon , when the Sun, Earth, and Moon line up so Earth’s shadow falls on the Moon.

• Because the Moon’s orbit is tilted about 5 degrees to Earth’s orbit, this perfect lineup doesn’t happen every month.

• In most years, there are 1–2 lunar eclipses , sometimes more; some years can even have none or up to three.

• From a single location on Earth, you’ll see a good number over time: roughly 19–20 lunar eclipses in 18 years , assuming clear skies.

How Often Different Types Happen

• Any lunar eclipse (penumbral, partial, or total):
  • Globally: typically 1–2 per year on average.

* Some calendar years: **0, 1, 2, or 3** lunar eclipses in total.

• Total lunar eclipses (deep “blood moon” events):
  • Roughly every couple of years somewhere on Earth ; statistics over many years show several totals per 18‑year span for one observing location.

* One source notes total lunar eclipses occur **at least two every three years** worldwide.

Simple way to think about it

You can think of lunar eclipses as special full moons that happen a few times a year globally, but only occasionally line up with where you are and with clear skies, which is why they feel rare even though they’re not extremely uncommon.

TL;DR: Lunar eclipses don’t happen every full moon; instead, Earth gets around 1–2 lunar eclipses per year on average , with total “blood moon” events showing up worldwide every few years.

Information gathered from public forums or data available on the internet and portrayed here.