Sunvane Golden Hour
Local sun times and photography light windows.
Find sunrise sunset times, golden hour time, blue hour and twilight times for a city and date. Plan up to 31 days of photography golden hour windows with calendar and CSV downloads, or compare day length between dates and seasonal dates.
What it does
- Local sunrise, sunset, solar noon and day length
- Morning and evening golden hour and blue hour
- Civil, nautical and astronomical twilight
- Sunrise and sunset azimuth from true north
- Shoot plans with ICS calendar and CSV downloads
- Day length differences and seasonal date comparisons
Try asking
“Golden hour calculator for New York, NY, on 06/21/2026”
“Plan evening shoots in Los Angeles, CA, starting 10/12/2026 for 7 days”
“Compare day length in Chicago, IL, on 03/20/2026 and 06/21/2026”
Limitations
- Flat horizon at sea level; hills, buildings and weather change the real light. Accuracy is about one minute below 66° latitude; uncertainty increases near polar transitions. Windows are clipped to the local date at midnight. Local clocks follow the host IANA time-zone database; future rules may change.
- City table covers population 50,000+ plus Tromso; use a nearby larger city for smaller places.
- Dates from 1900 to 2100. Shoot plans cover 1 to 31 days.
- City data: GeoNames, CC BY 4.0. https://www.geonames.org/
Add it
ChatGPT: once Sunvane Golden Hour is approved, add it from the ChatGPT plugin directory.
Claude: go to Customize > Connectors > Add custom connector and enter
https://golden-hour.zovo.one/mcp. No sign-in is needed. Once Sunvane Golden Hour is listed in the Claude connector directory, you can add it from there too.Other MCP clients can connect to the same endpoint: https://golden-hour.zovo.one/mcp