Cosmic Scale
Supermoons, equinoxes and solstices in 2026 and 2027
The full Moons that come closest to Earth, the Blue Moons, and the equinoxes and solstices that mark the seasons, with their exact times in UTC.
Cosmic Scale works these out on your phone from real orbits, tells you whether you can see each eclipse from where you are, and can remind you the evening before.
Coming up
Supermoon
24 November 2026, peak 14:54 UTC
A Full Moon at its closest: 360,800 km away, instead of 384,400 km on average, so it looks a little bigger and brighter. The difference is small and hard to notice without a comparison.
December solstice
21 December 2026, peak 20:50 UTC
The Sun reaches its farthest point south. It is the shortest day in the north and the longest in the south.
Supermoon
24 December 2026, peak 01:28 UTC
A Full Moon at its closest: 356,700 km away, instead of 384,400 km on average, so it looks a little bigger and brighter. The difference is small and hard to notice without a comparison.
Supermoon
22 January 2027, peak 12:17 UTC
A Full Moon at its closest: 357,600 km away, instead of 384,400 km on average, so it looks a little bigger and brighter. The difference is small and hard to notice without a comparison.
March equinox
20 March 2027, peak 20:24 UTC
The Sun crosses the celestial equator heading north. Day and night are nearly equal everywhere; spring begins in the north and autumn in the south.
June solstice
21 June 2027, peak 14:10 UTC
The Sun reaches its farthest point north. It is the longest day in the north and the shortest in the south.
September equinox
23 September 2027, peak 06:01 UTC
The Sun crosses the celestial equator heading south. Day and night are nearly equal everywhere; autumn begins in the north and spring in the south.
December solstice
22 December 2027, peak 02:42 UTC
The Sun reaches its farthest point south. It is the shortest day in the north and the longest in the south.
Earlier
March equinox
20 March 2026, peak 14:45 UTC
The Sun crosses the celestial equator heading north. Day and night are nearly equal everywhere; spring begins in the north and autumn in the south.
Blue Moon
31 May 2026, peak 08:45 UTC
The second Full Moon in a calendar month. The Moon is not blue: the name is a calendar quirk, since the Moon's cycle (29.5 days) is a little shorter than most months.
June solstice
21 June 2026, peak 08:25 UTC
The Sun reaches its farthest point north. It is the longest day in the north and the shortest in the south.
September equinox
23 September 2026, peak 00:05 UTC
The Sun crosses the celestial equator heading south. Day and night are nearly equal everywhere; autumn begins in the north and spring in the south.