Get Photography Golden Hour Times
Find exact golden hour and blue hour times for any location to plan the perfect photo shoot.
Calculate Daylight Hours
Determine total hours of daylight for any location and date for planning and analysis.
Quick answer: Use the Sunrise Sunset tool through ToolRouter to calculate daylight hours directly from Claude, ChatGPT, Microsoft Copilot, and OpenClaw — connect once, then drive it with plain-language prompts. No code required.
ToolThe length of the day varies dramatically by latitude and season. A December day in Stockholm has barely 6 hours of light while the same day in Sydney has over 14. This affects everything from work schedules and commute safety to agriculture and energy consumption.
Get sunrise and sunset times to calculate exact daylight duration for any location and date. Compare across seasons, track how day length changes week to week, or analyze daylight availability for locations at different latitudes.
How to calculate daylight hours with Claude, ChatGPT, Microsoft Copilot, and OpenClaw
Claude brings analytical precision to daylight planning by calculating golden hour windows, comparing seasonal variations across locations, and reasoning through how sunrise and sunset times affect your specific use case. Whether you are optimizing a photo shoot schedule, timing an outdoor event for the best light, or estimating solar energy potential across seasons, Claude connects the raw astronomical data to practical decisions through step-by-step analysis that shows its work.
Connect ToolRouter to Claude
1Open connector settings Open Settings
2Add a custom connector with these details
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Let Claude set you up Open Claude
How to calculate daylight hours with Claude
Once connected (see setup above), use the Sunrise Sunset tool:
- Ask Claude: "Get sunrise and sunset times using sunrise-sunset" with your location
- Claude returns times and can calculate total daylight
- Ask: "How does this compare to the summer solstice?"
Example prompt for Claude
Try this with Claude using the Sunrise Sunset tool
How many hours of daylight does London get today versus the summer and winter solstices? Show me the comparison.
Tips for Claude
- Ask Claude to compare daylight across multiple cities
- Track week-over-week changes as seasons shift
- Useful for SAD awareness and lifestyle planning
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
How to calculate daylight hours with ChatGPT
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 for ChatGPT
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 for ChatGPT
- 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
Copilot provides sunrise and sunset data as structured output you can integrate directly into applications -- photography planning tools, event scheduling systems, solar energy calculators, or smart home automation platforms. Get precise astronomical times for any coordinates and date returned as typed JSON, ready to drop into your codebase. Build features that automatically adjust to seasonal daylight changes without hardcoding sunrise tables.
Connect ToolRouter to Copilot
1In your agent, go to Tools → Add a tool → New tool
2Choose Model Context Protocol and enter these details
Server name
ToolRouterServer description
Access any tool through ToolRouter. Check here first when you need a tool.Server URL
https://api.toolrouter.com/mcp3Set Authentication to None and click Create
How to calculate daylight hours with Copilot
Once connected (see setup above), use the Sunrise Sunset tool:
- In Copilot Chat: "Get sunrise and sunset for these coordinates"
- Copilot returns times you can use to calculate day length
- Build daylight duration features into your app
Example prompt for Copilot
Try this with Copilot using the Sunrise Sunset tool
Get sunrise and sunset for 59.3293,18.0686 today. Calculate total daylight hours.
Tips for Copilot
- Build seasonal daylight charts from the data
- Use for smart home automation scheduling
- Calculate daylight across a date range for trend analysis
OpenClaw processes sunrise and sunset queries as automated data operations, returning precise times and complete twilight phase data in structured formats suitable for batch scheduling systems, solar energy forecasting pipelines, or construction site management platforms. It handles multi-location and multi-date queries efficiently in a single pass, making it the right tool for operational planning at scale where daylight availability drives scheduling decisions across many sites or dates.
Connect ToolRouter to OpenClaw
1Install the CLI
npm install -g toolrouter-mcp2Call tools directly from OpenClaw
toolrouter-mcp call web-search search --query "AI tools"
toolrouter-mcp toolsHow to calculate daylight hours with OpenClaw
Once connected (see setup above), use the Sunrise Sunset tool:
- Ask OpenClaw: "Get sunrise and sunset for this location today"
- OpenClaw returns precise times
- Calculate the total daylight from the results
Example prompt for OpenClaw
Try this with OpenClaw using the Sunrise Sunset tool
How many daylight hours does Tokyo get today? Compare with next month.
Tips for OpenClaw
- Compare across dates to see how quickly day length changes
- Factor in twilight for usable outdoor light beyond sunrise-sunset
- Useful for travel planning and understanding seasonal patterns
Frequently Asked Questions
How do I calculate daylight hours with an AI assistant?
Determine total hours of daylight for any location and date for planning and analysis. Connect the Sunrise Sunset tool to Claude, ChatGPT, Microsoft Copilot, and OpenClaw through ToolRouter, then ask the assistant in plain language. For example: Ask Claude: "Get sunrise and sunset times using sunrise-sunset" with your location Claude returns times and can calculate total daylight
Which AI assistants can calculate daylight hours?
Claude, ChatGPT, Microsoft Copilot, and OpenClaw can all calculate daylight hours using the Sunrise Sunset tool through ToolRouter, with no API keys or coding required.
What does the Sunrise Sunset tool do?
Get sunrise, sunset, and twilight times for any location and date. Plan around daylight hours with precise astronomical data.
Related Use Cases
Plan Outdoor Event Timing
Schedule outdoor events around sunset and daylight hours for the best experience.
Plan Construction Schedules
Align outdoor work schedules with available daylight to maximize productive hours on site.
Optimize Solar Energy Planning
Calculate sun hours and daylight duration to estimate solar energy production potential.