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First Day of Summer 2027

When summer begins, to the minute in Eastern Time, with every year through 2035.

In short

Summer 2027 begins on Monday, June 21, 2027, at 10:11 AM EDT, with the June solstice (summer solstice). It is the longest day of the year in the Northern Hemisphere. Meteorological summer starts on June 1.

First day of summer, 2026 to 2035

YearDateTime (ET)
2026Sun, Jun 214:24 AM EDT
2027Mon, Jun 2110:11 AM EDT
2028Tue, Jun 204:02 PM EDT
2029Wed, Jun 209:48 PM EDT
2030Fri, Jun 213:31 AM EDT
2031Sat, Jun 219:17 AM EDT
2032Sun, Jun 203:09 PM EDT
2033Mon, Jun 209:01 PM EDT
2034Wed, Jun 212:44 AM EDT
2035Thu, Jun 218:33 AM EDT

All seasons 2027

  • Spring: Saturday, March 20, 2027, 4:25 PM EDT (March equinox (spring equinox))
  • Summer: Monday, June 21, 2027, 10:11 AM EDT (June solstice (summer solstice))
  • Fall: Thursday, September 23, 2027, 2:02 AM EDT (September equinox (fall equinox))
  • Winter: Tuesday, December 21, 2027, 9:42 PM EST (December solstice (winter solstice))

Questions

Is the first day of summer always on the same date?

No. In Eastern Time it falls on June 21 and June 20 between 2026 and 2035, because a year is not exactly 365 days long.

What time zone are the times in?

Eastern Time (EST or EDT). For Central Time subtract one hour, for Mountain two, for Pacific three. Late in the evening the date can be a day earlier out west.

What is the difference between astronomical and meteorological seasons?

Astronomical seasons start at the equinoxes and solstices. Meteorologists use whole months: summer from June 1 for three months.

Source: U.S. Naval Observatory: Astronomical Applications · Updated: November 2026 · How the calendars are made

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