The live countdown to the June solstice, when astronomical summer begins in the Northern Hemisphere, to the minute in your time zone.
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It’s today!
The next years
20262026-06-21
20272027-06-21
20282028-06-20
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The June solstice
The June solstice is the moment the Sun reaches its northernmost point in the sky: the longest day of the year
north of the Equator. The times above are worked out with astronomia, an implementation of Jean Meeus’s
astronomical algorithms, and agree with the US Naval Observatory’s to within a minute.
Questions and answers
When does summer start?
Astronomical summer starts at the June solstice, on June 20 or 21. Weather services use meteorological summer, which starts on June 1. In the Southern Hemisphere the June solstice begins winter.
What about summer vacation?
School holidays differ by school and country. Use the countdown to any date with your last day of school.