Astronomical Events Countdown

Upcoming meteor showers, solstices, equinoxes, and eclipses.

Next Event

June Solstice

The Sun reaches its northernmost point. Longest day in the Northern Hemisphere.

June 21, 2026

8in days

Upcoming Events

June Solstice

June 21, 2026

in 8 days

Southern Delta Aquarids

July 30, 2026

in 47 days

Perseids Meteor Shower

August 12, 2026

in 60 days

September Equinox

September 23, 2026

in 102 days

Orionids Meteor Shower

October 21, 2026

in 130 days

Leonids Meteor Shower

November 17, 2026

in 157 days

How to track upcoming meteor showers and astronomical events

  1. 1

    Open the astronomical events countdown — the page automatically lists all upcoming events sorted by date.

  2. 2

    Browse through upcoming meteor showers, solstices, equinoxes, and eclipses — each event shows days remaining until peak.

  3. 3

    Plan your stargazing session — check moon phase conditions, find a dark-sky location, and mark the event date on your calendar.

Frequently Asked Questions

How accurate are the meteor shower peak dates?
Meteor shower peaks are approximate — they can shift by ±1 day each year. Our dates represent the expected peak based on the International Meteor Organization (IMO) annual calendar. Actual rates depend on moon phase, local weather, and light pollution.
Where do these astronomical event dates come from?
Solstice and equinox dates are computed from solar orbital mechanics (Meeus algorithm) with sub-minute accuracy. Meteor shower peaks come from the IMO Meteor Shower Calendar. The data covers 2025–2030.
Can I see these events from my location?
Meteor showers and eclipses have different visibility regions. We show universal peak dates — check your latitude and local weather conditions. Visit timeanddate.com or Stellarium for location-specific visibility predictions.
Will the data be updated beyond 2030?
Yes. We maintain a lookup table of astronomical events. We plan to extend coverage to 2035 in the next update. Subscribe to our newsletter for notifications.

How Countdown Calculations Work

What Is a Julian Day?

The Julian Day Number (JDN) is a continuous count of days since January 1, 4713 BC. Astronomers use it to simplify date arithmetic — you subtract two JDNs to get the exact number of days between any two dates, no calendar quirks to worry about.

USNO Reference

What Are Solar Terms?

The 24 solar terms divide the year by the Sun's position along the ecliptic. Each term spans exactly 15° of celestial longitude. They are a lunisolar calendar system distinct from the lunar month system, used for agriculture in East Asia for over 2000 years.

Wikipedia

How Is Easter Calculated?

Easter Sunday is determined by the Computus — a set of rules that finds the first Sunday after the first full moon on or after the March equinox. Butcher's Algorithm (1876) computes it with pure integer arithmetic, valid for all Gregorian years.

Butcher's Algorithm

Meteor Shower Calendar

Meteor showers occur when Earth passes through debris trails left by comets. The International Meteor Organization (IMO) publishes an annual calendar of peak dates. Major showers like the Perseids and Geminids are reliable year after year.

IMO Calendar

Countdown to upcoming meteor showers (Perseids, Geminids, Quadrantids), solstices, equinoxes, and more. Plan your stargazing nights. Free, browser-based. · All calculations execute client-side — zero network requests, zero data transmitted. Event data pre-built at compile time.