When Is First Day of Summer (Northern Hemisphere) 2027?
First Day of Summer (Northern Hemisphere) 2027 falls on Monday, June 21, 2027.
First Day of Summer (Northern Hemisphere) 2027 falls on Monday, June 21, 2027 — a Monday. That is 241 days from today. The date is confirmed, so the only thing that moves is the countdown itself.
| Year | Date | Day of week |
|---|---|---|
| 2027 | Mon 21 Jun 2027 | Monday |
| 2028 | Wed 21 Jun 2028 | Wednesday |
| 2029 | Thu 21 Jun 2029 | Thursday |
| 2030 | Fri 21 Jun 2030 | Friday |
| 2031 | Sat 21 Jun 2031 | Saturday |
| 2032 | Mon 21 Jun 2032 | Monday |
Why the day of the week moves
A date advances by one weekday each year, because 365 days is 52 weeks plus one day. In a leap year it advances by two, which is why the weekday occasionally jumps. Over the six years in the table above you can watch both patterns: the single-step years and the leap-year double step.
This matters more than it sounds if you are planning around a weekend. An event that lands on a Saturday this year may fall midweek in two years' time, which changes everything from travel to time off.
About First Day of Summer (Northern Hemisphere) 2027
The june solstice of 2027 falls on June 21, 2027 at 14:06 UTC — the astronomical start of summer in the Northern Hemisphere (winter below the equator).
Astronomically, this is the Sun at its northernmost point — summer begins in the north, winter in the south. It is also the day the tide of daylight turns: after the June solstice the change is barely minutes per week, then accelerates — the reason the weeks after a solstice feel darker (or lighter) faster than the solstice day itself.
Quick facts
| Exact moment (UTC) | June 21, 2027 · 14:06 |
|---|---|
| Event | June Solstice |
| Hemisphere note | Seasons flip in the Southern Hemisphere |