Blue Moon - The Blue Moon of 2026

Our Blue Moon Calculator says that in 2026, there is a Blue Moon in May. Is that true in all parts of the world? After all, previous Blue Moons have fallen on different days in different parts of the world.

Let's start with the basic astronomical facts. The Full Moons for May 2026 are as follows:

1 May	at	17:23 UTC
31 May	at	08:45 UTC

These dates and times have been calculated rigorously using the same methods as those employed by the United States Naval Observatory and by Her Majesty's Nautical Almanac Office. They are given in Coordinated Universal Time (UTC) which is the standard time zone used by astronomers worldwide. It is effectively the same as Greenwich Mean Time (GMT).

Here are those Full Moons again, but with the dates and times adjusted for several major time zones around the world. For each time zone, the two Full Moons which fall in the same calendar month are highlighted.

City	Standard Time Zone	Full Moon 1	Full Moon 2
Auckland	UTC + 12 hours	May 2 05:23	May 31 20:45
Sydney	UTC + 10 hours	May 2 03:23	May 31 18:45
Adelaide	UTC + 9 hours 30 minutes	May 2 02:53	May 31 18:15
Brisbane	UTC + 10 hours	May 2 03:23	May 31 18:45
Perth	UTC + 8 hours	May 2 01:23	May 31 16:45
Tokyo	UTC + 9 hours	May 2 02:23	May 31 17:45
Shanghai	UTC + 8 hours	May 2 01:23	May 31 16:45
Kolkata	UTC + 5 hours 30 minutes	May 1 22:53	May 31 14:15
Karachi	UTC + 5 hours	May 1 22:23	May 31 13:45
Moscow	UTC + 3 hours	May 1 20:23	May 31 11:45
Johannesburg	UTC + 2 hours	May 1 19:23	May 31 10:45
Paris	UTC + 1 hours	May 1 19:23¹	May 31 10:45¹
London	UTC	May 1 18:23¹	May 31 09:45¹
Sao Paulo	UTC - 3 hours	May 1 14:23	May 31 05:45
Halifax	UTC - 4 hours	May 1 14:23¹	May 31 05:45¹
New York	UTC - 5 hours	May 1 13:23¹	May 31 04:45¹
Chicago	UTC - 6 hours	May 1 12:23¹	May 31 03:45¹
Edmonton	UTC - 7 hours	May 1 11:23¹	May 31 02:45¹
Los Angeles	UTC - 8 hours	May 1 10:23¹	May 31 01:45¹
Hawaii	UTC - 10 hours	May 1 07:23	May 30 22:45
¹ Daylight saving time is in effect.

As you can see, most of the world has a Blue Moon on 31 May. The exception is Hawaii. Its time zone is sufficiently far behind GMT that the second Full Moon occurs in the late evening of 30 May instead.

Once in a Blue Moon

The Blue Moon of 2026