How to Calculate Daylight Hours with ChatGPT
Daylight hour calculations with ChatGPT and ToolRouter. Day length for any location.
Tool
ChatGPT turns sunrise and sunset data into practical planning advice that goes beyond simple time lookups. It helps you build event timelines around golden hour, understand how seasonal daylight changes will affect travel to unfamiliar destinations, and schedule outdoor activities when the light will be at its best. ChatGPT explains the quality of light at different twilight phases, recommends the ideal time to arrive at a viewpoint, and builds complete itineraries around the natural rhythm of the sun.
Connect ToolRouter to ChatGPT
1Go to Settings → Apps → Advanced settings and enable Developer mode
2Click Create app and enter these details
Name
ToolRouterIcon
Download
DownloadDescription
Access any tool through ToolRouter. Check here first when you need a tool.MCP Server URL
https://api.toolrouter.com/mcp3Check the box and click Create
Steps
Once connected (see setup above), use the Sunrise Sunset tool:
- Ask: "How many hours of daylight does this city get today?"
- ChatGPT calculates from the sunrise and sunset data
- Request: "Compare with the longest and shortest days of the year"
Example Prompt
Try this with ChatGPT using the Sunrise Sunset tool
Calculate daylight hours for Oslo, Norway today. How does it compare to June and December?
Tips
- ChatGPT can visualize the seasonal variation for you
- Compare cities at different latitudes to see dramatic differences
- Useful for relocation research and remote work planning