A reference table of every full moon from 2000 through 2035, given in U.S. Eastern Time. The dataset includes 445 full moons across 36 calendar years, with 14 Blue Moon months (a calendar month containing two full moons) and traditional moon names from the Old Farmer’s Almanac. Use the year selector below to focus on a single year, or switch to the full grid view to scan the whole 36-year window.
- Last verified
- 2026-04-24, against the U.S. Naval Observatory’s Phases of the Moon data service.
- Method
- Computed via the Meeus astronomical algorithm; converted from UTC to U.S. Eastern Time with daylight-saving handled by the IANA time-zone database.
- Maintenance
- The calendar is regenerated annually so the forward window stays roughly a decade out and the historical table stays accurate.
What a full moon is
A full moon happens when the Sun, Earth, and Moon line up so that the Moon is on the opposite side of Earth from the Sun. The side of the Moon that faces Earth is then fully illuminated, and the Moon appears as a bright, round disk in the night sky.
That alignment recurs about every 29.5 days — the synodic month. Because the calendar year is 365 days, most years contain 12 full moons and a few contain 13. The exact day of any given full moon depends on what time zone you read the calendar in: a full moon that occurs at 02:00 UTC on, for example, June 15 falls at 10:00 PM Eastern on June 14. Every date on this page is given in U.S. Eastern Time, with daylight saving applied where appropriate.
The full-moon calendar (2000–2035)
Blue Moon month (two full moons in the same calendar month). No full moon in that month (rare; February only).
Traditional moon names
The Old Farmer’s Almanac maintains the traditional U.S. naming tradition for full moons. The Almanac itself notes that the origins of any single list are difficult to trace and that one list cannot represent the full richness or regional variation of Indigenous naming traditions across North America — the names below are most commonly attributed to Algonquin peoples of the northeastern United States, with adaptations from Colonial American sources.
- January
- Wolf Moon — named for the howling of wolves heard in midwinter.
- February
- Snow Moon — named for the heaviest snowfall month in much of North America.
- March
- Worm Moon — named for the earthworm casts that appear as the ground thaws.
- April
- Pink Moon — named for the early-spring bloom of moss pink (creeping phlox).
- May
- Flower Moon — named for the abundance of late-spring flowers.
- June
- Strawberry Moon — named for the ripening of wild strawberries.
- July
- Buck Moon — named for the new antlers emerging on white-tailed deer.
- August
- Sturgeon Moon — named for the seasonal sturgeon catch in the Great Lakes.
- September
- Harvest Moon — the full moon nearest the autumnal equinox; brightens the early-evening sky during the harvest.
- October
- Hunter’s Moon — the full moon following the Harvest Moon; named for the hunting season.
- November
- Beaver Moon — named for the beaver-trapping season before lakes froze.
- December
- Cold Moon — named for the long, cold nights of midwinter.
Blue Moons in this dataset
A Blue Moon, in modern American almanac usage, is the second full moon in a single calendar month. Because the synodic month is about 29.5 days and most calendar months are 30 or 31, a month occasionally fits two full moons. Blue Moons happen roughly every 2.5 years on average. The 2000–2035 dataset on this page contains 14 Blue Moon months, listed below in chronological order.
- 2001 — November (Nov 1 + Nov 30)
- 2004 — July (Jul 2 + Jul 31)
- 2007 — May (May 2 + May 31)
- 2009 — December (Dec 2 + Dec 31)
- 2012 — August (Aug 1 + Aug 31)
- 2015 — July (Jul 1 + Jul 31)
- 2018 — January (Jan 1 + Jan 31) and March (Mar 1 + Mar 31). 2018 also had no full moon in February at all — an unusual year that combined two Blue Moon months with one moonless month.
- 2020 — October (Oct 1 + Oct 31)
- 2023 — August (Aug 1 + Aug 30)
- 2026 — May (May 1 + May 31)
- 2028 — December (Dec 1 + Dec 31)
- 2031 — September (Sep 1 + Sep 30)
- 2034 — July (Jul 1 + Jul 31)
Frequently asked questions
What is a full moon?
A full moon happens when the Sun, Earth, and Moon line up so that the Moon is on the opposite side of Earth from the Sun. The side of the Moon that faces Earth is then fully illuminated by sunlight, and the Moon appears as a bright disk in the night sky. This alignment recurs about every 29.5 days — the synodic month — which is why most calendar years have 12 full moons and a few have 13.
Why do the dates on this page differ slightly from other sources?
All dates on this page are given in U.S. Eastern Time, with daylight saving time applied where appropriate. Some other sources publish dates in Coordinated Universal Time (UTC), which can put a full moon on a different calendar day depending on the time of day it occurs. For verification, the U.S. Naval Observatory publishes the same data in UTC at aa.usno.navy.mil/data/MoonPhases. A full moon that the USNO lists at 02:00 UTC on, for example, June 15 falls at 10:00 PM Eastern on June 14 — same astronomical event, different calendar day depending on which time zone you are in.
How were these dates generated?
The dates on this page were computed using the established Meeus astronomical algorithm for lunar phases (the same algorithm published by Jean Meeus in Astronomical Algorithms and used by professional ephemeris software). The computation produces full moon times in UTC, which are then converted to U.S. Eastern Time using the IANA time-zone database to handle daylight saving correctly. The generated dates are checked against the U.S. Naval Observatory before publication and during annual regeneration.
What is a Blue Moon?
A Blue Moon, in modern American almanac usage, is the second full moon in a single calendar month. Because the synodic month is 29.5 days and most calendar months are 30 or 31 days, a month occasionally fits two full moons. Blue Moons happen roughly every two and a half years on average. The dataset on this page includes 14 Blue Moon months between 2000 and 2035 — and 2018 was an unusual year that included two Blue Moon months (January and March), with February having no full moon at all.
Where do the traditional moon names come from?
The names listed on this page (Wolf Moon, Snow Moon, Worm Moon, and so on) are the names long used in the Old Farmer’s Almanac tradition. They are most commonly attributed to Algonquin peoples of the northeastern United States, with adaptations from Colonial American sources. The names reflect seasonal observations — the Strawberry Moon falls when wild strawberries ripen, the Harvest Moon falls near the autumnal equinox when crops are gathered. The Old Farmer’s Almanac itself notes that the origins of any single list of moon names are difficult to trace and that one list cannot represent the full richness or regional variation of Indigenous naming traditions across North America.
Why does the page keep the same URL when the date range changes?
The page’s URL is fixed at /tax/full_moon_calendar_days so that existing inbound links continue to work. The visible title, table, and maintenance stamp are updated as the date range expands — this version covers 2000 through 2035, and the page is regenerated annually as part of Crest Capital’s reference-content maintenance.
Selected sources
- U.S. Naval Observatory — Phases of the Moon The USNO Astronomical Applications Department’s authoritative service for primary moon phases (new, first quarter, full, last quarter), publishing dates and times for years 1700–2100 in Coordinated Universal Time. The verification reference for the dates on this page.
- NASA Scientific Visualization Studio — Moon Phase and Libration, 2026 NASA Goddard Space Flight Center’s annual Moon Phase and Libration visualization, with hourly-resolution lunar imagery rendered from Lunar Reconnaissance Orbiter data. NASA SVS publishes a new annual visualization each year; the 2026 version is the current edition as of this page’s last verification.
- The Old Farmer’s Almanac — Full Moon Names The Almanac’s reference page for traditional U.S. full-moon names, with origin notes. The Almanac is explicit that the origins of any single list of moon names are difficult to trace and that one list cannot represent the full richness or regional variation of Indigenous naming traditions.