How many days until the first day of summer?
See the countdown, then add Summer plus 30-, 10-, and 1-day calendar reminders free.
Put Summer on your calendar.
Add the date and countdown reminders in one step.
The first option creates a calendar file for Apple Calendar or Outlook. Google Calendar can import it on a computer.
Change event or date
Planning for Summer
The first day of summer next falls on Monday, June 21, 2027. This calculator uses June 21 as the first day of summer and rolls forward to the next June 21 after that date passes.
The main answer counts calendar-day boundaries from your local date and does not include today. The same span is 40 full weeks and 0 extra days, or approximately 6,704 hours from the time this page was generated. Your time zone can change the hourly total and the moment a new calendar day begins.
Which countdown reminders should you add?
A 30-day reminder can start trip or activity planning, ten days helps with reservations and supplies, and one day gives you a final prompt before the season begins. Choose only the milestones that are useful to you.
After those events are in your calendar, OnTimer can turn them into automatic alarms that are harder to miss.