Astronomy

September equinox

371jours

—hype

Live score from visits, saves, calendar adds, shares, and comments.
    SaveAdd to collection
    Add to calendar

    Choose your calendar

    Google Calendar Outlook

    Use the file with Apple Calendar or another calendar app.

    Event time shown in UTC. The countdown follows the same moment worldwide.

    Choose a year

    More dates for September equinox.

    All dates

    About this moment

    There are 371 days until September equinox, on Thursday, 23 September 2027.

    September equinox at 06:01 UTC on 23 September 2027, computed with astronomy-engine. The Sun crosses the celestial equator heading south; day and night are close to equal length everywhere. Astronomical autumn begins in the Northern Hemisphere and spring in the Southern Hemisphere.

    Where
    Worldwide
    Explore related topics
    equinoxseasonsskycomputed

    Date source

    Computed astronomy

    Last verified Sep 10, 2026

    Sources and attributions

    This is a public listing. If the date or details look wrong, tell us.

    Comments

    Opening comments…

      Make it part of your world

      A live widget for your site or stream.

      Also on the horizon

      Explore more