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WHAT TO SEE & WHEN

Equinoxes & Solstices.

The next turning points of the year, with exact times.

Plan ahead

Upcoming equinoxes & solstices

Read the field guide ↓

The next 400 days in the available catalog. Event pages explain local visibility and prediction uncertainty.

Catalog refreshed . Dates and predictions come from the catalog used by Forecast Bar, with a source on every event.

Calendar day groupings use UTC. Event times adapt to your device’s time zone when JavaScript is available. Exact local visibility and weather can differ from the global catalog timing.

Observing tips & background

A little context. A better view.

Equinoxes & Solstices: a field guide

Astronomical seasons have precise boundaries

Equinoxes and solstices are calculated from the Earth–Sun geometry. Their exact times are global; the local calendar date can differ by time zone.

The hemispheres tell opposite stories

A June solstice marks the start of astronomical summer in the Northern Hemisphere and winter in the Southern Hemisphere. Event details identify both hemispheres.

These are calendar milestones

An equinox or solstice is not a brief object appearing in the sky. No special equipment or clear weather is required to mark the instant in your calendar.

Weather seasons are a different convention

Astronomical season boundaries do not predict a particular temperature or a sudden weather change. Local climate and seasonal weather follow their own patterns.

Learn more: U.S. Naval Observatory astronomical data

Recently in the sky

Past events, preserved for reference.

Take the sky with you

From a date on a calendar
to a night worth remembering.

Open the astronomy calendar in Forecast Bar to explore events alongside your local weather and astronomy alert settings.

Open in Forecast Bar Explore astronomy in the app
An illustrated night landscape unfolding from a little book.
A little wonder. Wherever you go.