Night observation planner
See what’s above
you tonight.
Find out when darkness begins, where the Moon will be, and which planets are above your horizon.
Your coordinates are used locally to calculate tonight’s sky.
Your evening starts with a location.
Sunset, Moon conditions and seven planets — calculated for you.01 / The evening ahead
Your night, at a glance.
Astronomical darkness
Sun at least 18° below the horizon02 / Follow the night
A moment. A different sky.
Move through the evening to explore what is above the horizon.
All twilight times & timeline guidance
Use the slider with touch, mouse, or arrow keys. Bars show above-horizon windows; curves show altitude. Times are local to your observing point. “+1 day” means the following morning.
03 / Find your bearings
Sky View
Choose a time. Your horizon will appear here.
Drag to rotate · scroll or pinch to zoom
Positions are calculated. Object sizes are symbolic. Only bodies above the horizon are drawn.
Positions in text
Our closest neighbour
Moon tonight
Phase schematic · orientation not to scale
Moon observing windows
04 / Beyond the Moon
Planets tonight
Ordered by useful observing windows, then by altitude. Positions follow your selected time.
Uranus and Neptune generally need optical equipment. Never aim binoculars or a telescope near the Sun.
A simpler way to look up
From here to up there.
Choose a location
Your position sets the local horizon, timezone and observing night.
Explore tonight
Find darkness, Moon conditions and the best placed planets.
Move through time
Drag the timeline to see where the Moon and planets will be.