See the sky above your date and place
Choose a place and a moment. Explore a calculated view of the sky, then decide whether you would like to make it a print. No signup or email needed.
Try a moment. Keep it private.
Where did it happen?
Try the Budapest example, or choose your own place and date. Your delivery country does not choose your sky.
City search: GeoNames · CC BY 4.0. Star data: HYG by David Nash / Astronexus, projected and limited for this preview · CC BY-SA 4.0. No account, email or purchase required.
Calculated reference example
Budapest, a summer evening
21 June 2025 · 22:00 Europe/Budapest · 20:00 UTC
2,288 catalogued stars above the ideal horizon; 800 brightest shown.
An ideal dark-sky reconstruction, including for daytime moments. No clouds, local lighting or refraction are reconstructed.
Calculate your sky to carry the moment privately into the designer. A saved design is kept until you choose otherwise.
How this sky is calculated ↗Two places. Two calculated skies.
21 June 2025, 22:00 in each city’s own timezone. Changing hemisphere and UTC instant changes the stars above the horizon.
Budapest
22:00 · Europe/Budapest
2025-06-21 20:00:00 UTC
200 brightest reference stars shown.
Sydney
22:00 · Australia/Sydney
2025-06-21 12:00:00 UTC
200 brightest reference stars shown.
Your place changes your view
The public examples compare Budapest and Sydney at 22:00 local time on 21 June 2025. Both location and their different UTC instants contribute to the changed view; these are separate calculations, not a rotated photograph.
Budapest · northern sky
The overhead view is centred on Budapest. North sits at the top of the circle; east is on the left, as it is when a chart is held above you. The circle's edge represents the ideal horizon.
Sydney · southern sky
Moving south changes the stars above the horizon. A constellation familiar from northern skies may lie below it. The Sydney reference is calculated from its own coordinates and local timezone.
What if you do not know the time?
Untick “I know the time” to use 22:00 in your chosen timezone. The result labels this assumption clearly. It is a useful starting point, not a recovered birth or ceremony time. Clocks moving forward can make a local time impossible; clocks moving back can make it occur twice. We ask you to resolve those cases instead of choosing silently.
A calculation, with a few honest limits
This is an ideal overhead view of catalogued stars, using the existing Skyfield engine, HYG star catalogue and JPL DE440s ephemeris. It does not reconstruct clouds, light pollution or what your eyes saw on that night. The small explorer displays up to 800 of the brightest catalogued stars above the ideal horizon. Constellation names refer to figures with some linework above that horizon; a name does not mean the entire constellation was visible.
Your result stays private
Your entries are sent in a private calculation request. They do not become a public date-and-city page, share link or downloadable print file. The optional next step passes the moment privately into the designer. If you already have a saved design there, you choose whether to keep it or start another.
A moment worth making your own?
The designer adds your words, design and format. You still inspect and approve the finished proof before a print can be ordered.
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