How to Build Holiday-Aware Calendars with OpenClaw
Holiday-aware business calendars with OpenClaw and ToolRouter. Accurate working-day data for any country.
Tool
OpenClaw automates annual business calendar generation for all operating countries. Schedule data pulls at the start of each year, calculate working days per period for every country, and output formatted calendar files ready for import into your ERP, scheduling, or project management systems automatically.
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 toolsSteps
Once connected (see setup above), use the Public Holidays tool:
- Ask OpenClaw: "Get all public holidays for Germany in 2026"
- OpenClaw returns the full holiday list
- Ask: "Calculate working days per quarter for 2026"
- Use the data in your business calendar system
Example Prompt
Try this with OpenClaw using the Public Holidays tool
Get public holidays for Germany in 2026 and build a quarterly working-days summary excluding weekends and holidays.
Tips
- Compare working-day counts across countries to understand capacity differences
- Use the data to set realistic delivery timelines for international projects
- Refresh the calendar annually to account for holidays that change dates