How many days until
First Day of Summer 2027?
Monday, June 21, 2027
As of 2026-09-11, First Day of Summer 2027 is 283 days away.
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About this countdown
First Day of Summer 2027 falls on Monday, June 21, 2027. The counter above ticks every second — days, hours, minutes and seconds — so you always know exactly how long until it arrives. It counts in your timezone, and the number updates on your device.