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Supermoon

Biggest Supermoon of 2026

Date & Time

UTC

Overview

December 24, 2026. The closest full moon of the year — only 356,600 km away. Apparent diameter 34′ — 14% larger than an average full moon. Spectacular at moonrise.

Data Source

Solstice and equinox dates calculated from JPL DE440 ephemeris (the same planetary/lunar ephemeris used by NASA). Meteor shower peak dates and ZHR values follow the International Meteor Organization (IMO) annual calendar. Planetary event data from NASA Horizons system.

Plan Your Observation

Use these free tools to prepare for the event:

☀️ Solar & Golden Hour Calculator🌆 Twilight Calculator🌙 MoonSync — Moon Phase & Interference🔭 Telescope FOV Calculator
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All tools on fastool.io run entirely in your browser — zero data leaves your device. No personal data is collected, stored, or transmitted to any server. Solar calculations use SunCalc.js; lunar data uses JPL DE440 ephemeris; coordinate transforms use publicly documented EPSG/OGC standards. This site requires no signup, no account, and no cloud processing.