The night sky,
in your calendar.

New moon and full moon

Peak activity nights for annual showers

Total, annular, and partial solar eclipses worldwide

Total, partial, and penumbral lunar eclipses worldwide

The four astronomical seasons

Events when a storm is forecasted to be visible at your latitude, based on NOAA's 3-day Kp forecast. ⚠️ Calendar apps sync every few hours — aurora events 1–3 days out will appear in time, but same-day storms may not. For real-time alerts, supplement with SpaceWeatherLive.

Best nights to view Mars, Jupiter, Saturn, and more

Best windows to spot inner planets

Close naked-eye planet pairs (≤ 5° apart)

Planet parades, Mars launch windows, and rare planetary events (e.g. Saturn ring plane crossings)

When the Moon passes in front of a bright planet or star

Significant Earth flybys worth tracking

Perihelion, closest approach, and naked-eye visibility windows

Crewed missions, maiden flights, heavy-lift vehicles, and flagship science payloads — no routine launches

Gravity assists, orbital insertions, spacecraft arrivals, and notable flybys for active missions

20, 25, 50, 75, and 100-year anniversaries of landmark moments in spaceflight

The annual new-moon night in March when all 110 Messier objects can be observed in one night — best from mid-northern latitudes

Nights when the galactic core is above the horizon during astronomical darkness with no moon

Public observing programs and events from your local astronomy club