Supermoon Calculator
Find the next supermoon dates and see how close each full moon is to perigee.
| Full Moon Date | Est. Distance | Type |
|---|
How It Works
A supermoon occurs when a full moon coincides with the Moon near its closest point to Earth (perigee). This tool lists the next 6 full moons and estimates each one's proximity to perigee.
Formula
Supermoon: Full Moon within ~90% of closest perigee distance
Frequently Asked Questions
What makes a Supermoon?
A Supermoon is a full moon that occurs when the Moon is within 90% of its closest approach to Earth, making it appear up to 14% larger and 30% brighter than a typical full moon.
How often do Supermoons occur?
Supermoons occur 3 to 4 times per year on average. The exact definition varies by astronomer.