Days Until First Day of Summer
Live countdown to First Day of Summer: the exact number of days, plus a ticking hours/minutes/seconds clock to Monday, June 21, 2027.
Wondering how many days until First Day of Summer? This page shows the live count — days, hours, minutes, and seconds — to Monday, June 21, 2027, and rolls forward to next year's date automatically once the day passes. Summer begins at the summer solstice, the longest day of the year in the Northern Hemisphere. The solstice falls on June 21 in most years of this era (occasionally June 20 or 22), so this page counts down to June 21.
Days until First Day of Summer
248
First Day of Summer falls on Monday, June 21, 2027
248
Days to go
13
Hours
10
Minutes
33
Seconds
How the date is set: June 21 (summer solstice in most years). The counter updates every second and rolls over to the next year automatically once the day has passed.
How to use this calculator
- Open this page — the countdown starts by itself, no buttons to press.
- Read the big gold number: that is how many whole days remain until First Day of Summer.
- Check the target date shown under the number (Monday, June 21, 2027) and the live hours/minutes/seconds clock.
- Leave the tab open or come back anytime; after the day passes it counts down to next year's date on its own.
The formula
First Day of Summer: June 21 (summer solstice in most years).
Worked example
Worked example: on Friday, October 16, 2026, this page showed 248 days until First Day of Summer. That matches a calendar count from October 16 to Monday, June 21, 2027, and it was produced by the same resolver the page uses live (verified against published 2026 calendars).
Frequently Asked Questions
When is First Day of Summer in 2026?
First Day of Summer falls on Sunday, June 21, 2026. Summer begins at the summer solstice, the longest day of the year in the Northern Hemisphere. The solstice falls on June 21 in most years of this era (occasionally June 20 or 22), so this page counts down to June 21.
How many days until First Day of Summer?
It depends on today's date, and this page computes it live so it is never stale. For a concrete example: on Friday, October 16, 2026, the counter read 248 days until First Day of Summer on Monday, June 21, 2027. The big number counts whole days to the date, while the smaller clock keeps ticking through the hours, minutes, and seconds.
How is the date of this day determined?
The rule is: June 21 (summer solstice in most years). In 2026 the solstice shares June 21 with Father's Day — the longest day and the cookout land on the same Sunday.
What happens to the countdown after the day passes?
It rolls over automatically. As soon as the date is behind us, the page resolves next year's occurrence using the same rule and starts counting down to that, so the page is correct whenever you visit it — no stale dates, ever.
Why does the day of the week change every year?
A normal year has 365 days, which is 52 weeks plus one extra day, so a fixed calendar date lands one weekday later the next year (two after a leap year). Days set by a weekday rule, like the fourth Thursday of November, keep their weekday and shift their calendar date instead.