Sky Calendar Download
For iPhone · Free to download

Know what's in the sky before it happens.

Meteor showers, eclipses, planets close together and the Space Station passing over. Sky Calendar lists what you can see from your city, tells you if the night will be clear, and shows you where to look.

Download on theApp Store Free · Plus with a 7-day free trial
Tonight tab: Moon phase and the constellations up tonight
Home screen: Milky Way nights highlight and upcoming Space Station passes
Event page: Mars–Jupiter conjunction, direction south, 55° above the horizon

01 · Events

Everything coming up over your city.

The home screen lists the sky events you can see from where you live, soonest first. The biggest ones get a highlight card.

  • Filter by type, or show naked-eye events only
  • Space Station passes, with their length and brightness
  • A reminder before each event, at the times you choose
Home screen with the event list

02 · Tonight

Is tonight worth going out?

Each hour of the night gets a score from 0 to 10, based on the cloud forecast, the Moon and how dark your sky is. The five-night outlook shows the best night of the week.

  • Moon phase, moonrise and moonset
  • When it's fully dark, and when the Milky Way is up
  • The constellations and planets visible tonight
Tonight tab with Moon and star map cards

03 · Event pages

What it is, when, and which way to face.

Every event has its own page: the exact time for your city, the compass direction, how high it will be, and a short explanation of what you are looking at.

  • Eclipse timelines with every stage for your city
  • “Show me where to look” points your camera at it
  • Add the event to your calendar or share it
Event page for the Mars–Jupiter conjunction

04 · Map

Find a darker place nearby.

The map shows up to 200 places around your city to watch from: viewpoints, parks, meadows and observatories, each rated for light pollution.

  • Light pollution from satellite measurements
  • Places with low light pollution for faint events
Map of places to watch the sky near Munich

Try it here

Hold up your phone. It shows you where to look.

On an event page, the camera view tells you which way to turn and how high to look. On the Tonight tab, it names the stars and constellations in front of you.

Drag the screen to turn the phone.

What it covers

Every kind of sky event.

Each one is worked out for your city, so the times and directions are yours.

Meteor showers

The peak night and how many meteors an hour.

Eclipses

Solar and lunar, with every stage timed.

Planets

Conjunctions, oppositions, the Moon passing a planet.

The Moon

Phases, supermoons, rise and set times.

Space Station

Every visible pass over your city.

Aurora

An alert when the northern lights may reach you.

Comets

Bright comets, and when they are easiest to see.

Milky Way

The dark nights when its core is up.

Seasons

Solstices and equinoxes.

Explore lists eclipses, bright comets and the strongest meteor showers until 2076, with the cities that will see them.

Widgets · free

The next event, on your Home Screen.

Home Screen and Lock Screen widgets show what's coming up and count down to the big events. Widgets and notifications are free.

Free and Plus

Free to use. Plus for planning ahead.

Plus is monthly, yearly or a one-time purchase, with a 7-day free trial.

Free

Everything you need for tonight

  • Upcoming sky events for your city
  • Reminders and notifications
  • Home Screen and Lock Screen widgets
  • Tonight's forecast and the AR star map
  • Explore one year ahead

Plus

For planning trips and nights out

  • The map of places to watch from
  • The five-night forecast
  • Aurora forecast and alerts
  • “Show me where to look” on event pages
  • Explore until 2076, and more than one city
  • Add events to your calendar

See what's up tonight.

Sky Calendar is free on the App Store for iPhone.

Download on theApp Store