May 2021 Moon Phases & Astronomy

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May 2021 Moon Phases & Astronomical Phenomena. The moon phases, eclipses, meteor showers, and other astronomy events for May 2021! Learn more at!

May 2021 is jam packed with astronomical events. On May 26th, the full Supermoon is occulted by the Earth’s shadow to create a Blood Moon – a phenomena known as a Total Lunar Eclipse. Before this, May shows us two meteor showers, followed by 6 lunar conjunctions the rest of the month. May 2021 signifies the beginning of the Eclipse season, so watch for a Solar Eclipse during the next New Moon!

On the East Coast of the United States, the Prenumbral Lunar Eclipse begins at 4:47 AM EST, followed by the Partial Lunar Eclipse at 5:44 AM EST. Unfortunately, the Sun will rise and the Total Lunar Eclipse will not be viewable.

In the Central US, the Total Lunar Eclipse begins at 6:11 AM Central.

Out west in California and the Pacific Northwest, the Total Lunar Eclipse begins at 4:11 AM PST.

Learn more about these events in the Glossary of Astronomical Events!

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Moon Phases for May 2021

Third Quarter MoonNew MoonFirst Quarter MoonFull Moon
May 3rdMay 11thMay 19thMay 26th

All times are in Eastern Standard Time (EST) or Eastern Daylight Savings Time (EDT).


Penumbral Lunar Eclipse

January 10th

Moon Facts

Ascending Node:13th
Descending Node:26th
Moon Name:Flower Moon

Meteor Showers

Learn More About Meteor Showers at WildHemlock.Com
NameDateRadiant Point (Origin Location)
η-Aquarids Meteor ShowerMay 4thAquarius
η-Lyrids Meteor ShowerMay 8thLyra

Lunar Conjunctions

Conjunction with SaturnConjunction with JupiterConjunction with VenusConjunction with Mercury
May 3rdMay 4thMay 12thMay 13th
Conjunction with MarsConjunction with Saturn
May 16thMay 30th

Planetary Alignments

MercurySaturnMercury and VenusMercury
Greatest Eastern ElongationEnters RetrogradeGeocentric ConjunctionEnters Retrograde
May 17thMay 23rdMay 29thMay 29th

Astronomy Calendar

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