Terms of Service
Last updated: 12 November 2026
These terms govern your use of skychrono.com. By using the service you agree to them. If you do not agree, please do not use SkyChrono.
Acceptance of terms
By using skychrono.com you agree to these terms and our privacy policy. We may update these terms now and then; the date at the top shows the latest version. Continued use after a change means you accept the updated terms.
The service
SkyChrono shows calculated positions of the Sun, Moon, planets and stars, sky events, observing suggestions and cloud forecasts for a place and time you choose. It is free for personal use. We may change, suspend or end any part of the service at any time without notice.
Estimates and safety
Positions and times are calculated for a level horizon at sea level. Suggested viewing times and cloud forecasts are estimates, not promises: weather, terrain, buildings, moonlight and light pollution all affect what you can see.
Never look at the Sun directly, or through binoculars, a camera or a telescope, without a certified solar filter. Take care outdoors at night.
Your responsibilities
You agree to use the service lawfully. You will not try to break, overload or get around the security or limits of the service, or use automated tools to copy or republish substantial parts of it.
Intellectual property
The service, its design, text, code and branding belong to SkyChrono and are protected by copyright and other intellectual property laws. Data and software from others are used under their licences and credited on the Sources & calculations page, including Astronomy Engine, the Yale Bright Star Catalogue, d3-celestial, weather data from MET Norway (CC BY 4.0) and place names from GeoNames via Open-Meteo (CC BY 4.0).
Disclaimers and limitation of liability
SkyChrono is provided “as is” and “as available” without warranties of any kind, express or implied. We do not guarantee that the service will be uninterrupted or error-free, or that positions, times, forecasts and other data are perfectly accurate.
To the maximum extent permitted by law, we are not liable for indirect, incidental, consequential or punitive damages, or for any loss arising from your use of the service. Our total liability for any claim relating to the service is limited to NOK 1,000.
Governing law and disputes
These terms are governed by the laws of Norway. Any dispute will be resolved in the courts of Norway, with Oslo District Court as the agreed first-instance venue.
Where mandatory consumer protection laws in your country apply, they prevail to that extent. Nothing in these terms limits your rights as a consumer under your local law.
Contact
For questions about these terms, email hello@skychrono.com.