Business days calculator MCP server with public holidays for 200 countries
claude mcp add --transport http daycount https://plugins.dudelemon.cloud/daycount/mcpRun this in your terminal. Add --scope user to use it in every project.
DayCount gives your AI assistant an exact business days calculator and holiday calendar for about 200 countries and their regions. It counts working days, finds deadlines a number of business days or business hours away, lists holidays, upcoming holidays and long weekends, and plans recurring dates such as the last working day of each month.
Dates can be written in words (next friday, end of month, in 10 days). Several countries can count together, so a day counts only when every place is working, for cross-border payments and settlement. For finance it adjusts payment dates by tenor and business day convention, and gives day count fractions and interest under ACT/360, ACT/365F, ACT/ACT and 30/360.
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Write the first reviewFrom the open date-holidays project (data under CC BY-SA 4.0), covering about 200 countries and their regions. Holidays set by the moon can move by a day, so check the official notice for legal deadlines.
Each country uses its usual weekend, and you can pass your own.
Yes. Pass a region code, such as SCT for Scotland or BY for Bavaria.
Yes. DayCount is free and needs no account or API key.
Add https://plugins.dudelemon.cloud/daycount/mcp to your assistant as a remote MCP server. In Claude Code: claude mcp add --transport http daycount https://plugins.dudelemon.cloud/daycount/mcp
