Who we are, how every date and time on this site is calculated, and where our information comes from.
Next Full Moon (nextfullmoon.co) and its Spanish sister site Lunallena (lunallena.co) answer one deceptively simple question — when is the next full moon? — and everything that naturally follows from it: what each month's full moon is called and why, when the next lunar and solar eclipses happen, what phase the Moon is in tonight, and how to actually go outside and see it all.
We built it because most lunar calendars online give you a bare date with no time, no time zone, and no context. A full moon is an instant, not a day: the Moon is 100% illuminated at one precise universal time, and depending on where you live that instant can even fall on a different calendar date. Every page here states the exact moment in UTC first, then converts it, so you always know which night to look up.
The dates and times on this site are not copied from other websites. They come from standard astronomical algorithms — the lunation and phase calculations published in Jean Meeus' Astronomical Algorithms, the reference work used by planetarium software and observatories — cross-checked against the publicly available lunar phase tables derived from NASA's ephemerides. When the two sources are reconciled, we publish the instant of syzygy (the exact alignment of Sun, Earth and Moon) rounded to the minute, in UTC.
A few practical rules we follow on every page:
The traditional full moon names we explain — Wolf, Snow, Worm, Pink, Flower, Strawberry, Buck, Sturgeon, Harvest, Hunter's, Beaver, Cold — entered popular use through the Maine Farmers' Almanac in the 1930s, which attributed them to Algonquian-speaking peoples of the northeastern United States. Where a name has older or parallel European roots (like the Moon After Yule, or the Lenten Moon), we say so. Folklore is presented as folklore: culturally real, historically sourced, and clearly separated from the astronomy.
Next Full Moon and Lunallena are made by Furiosa Studio, an independent studio that builds small, fast, data-driven websites and free tools — from astronomy calendars to historical datasets. Everything is published in both English and Spanish, hand-edited rather than machine-translated, and maintained continuously: the "next full moon" data on this site is refreshed automatically every day from our source-of-truth lunar table, and the guides are revised whenever a date, a supermoon designation or an eclipse circumstance needs correcting.
You can find the rest of our projects through the Furiosa Data Tools Network or follow the studio on X at @furiosadata.
If you spot a date, a time or a conversion that looks wrong, tell us — we treat every report seriously. Times are verified against the astronomical sources above before and after publication, and any correction is applied to both language versions of the affected page. The publication and revision dates in each article's metadata reflect when the page was last reviewed.
The site is free, requires no signup, and is funded by contextual advertising (Google AdSense) and occasional Amazon affiliate links for telescopes and binoculars, always labeled as such. Advertising never influences the astronomy: dates, times and event designations come only from the sources described above.