mcp-datetimeday

A lightweight MCP server for date, time, and day of week.

Installation

uv sync

Usage

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "datetimeday": {
      "command": "uv",
      "args": ["run", "--directory", "/Users/robsherman/Servers/mcp-datetimeday", "mcp-datetimeday"]
    }
  }
}

Available Tools

Example Output

get_datetime()

{
  "day_of_week": "Monday",
  "date": "2026-02-02",
  "time": "16:55:22",
  "timezone": "PST",
  "utc_offset": "-0800",
  "iso8601": "2026-02-02T16:55:22-08:00",
  "unix_timestamp": 1770080122,
  "human_readable": "Monday, February 02, 2026 at 04:55 PM"
}

get_datetime(format="iso8601")

{
  "day_of_week": "Monday",
  "iso8601": "2026-02-02T16:55:22-08:00"
}

get_datetime(tz="UTC")

{
  "day_of_week": "Tuesday",
  "date": "2026-02-03",
  "time": "00:55:22",
  "timezone": "UTC",
  "utc_offset": "+0000",
  "iso8601": "2026-02-03T00:55:22+00:00",
  "unix_timestamp": 1738544122,
  "human_readable": "Tuesday, February 03, 2026 at 12:55 AM"
}

relative_time("2026-02-10")

{
  "target": "2026-02-10",
  "target_day_of_week": "Tuesday",
  "reference": "now",
  "relative": "in 1 week",
  "days_difference": 7,
  "total_seconds": 604800
}

get_week_year()

{
  "date": "2026-02-02",
  "day_of_week": "Monday",
  "day_of_week_number": 1,
  "week_number": 5,
  "iso_week": 6,
  "iso_year": 2026,
  "day_of_year": 33,
  "days_remaining_in_year": 332,
  "is_weekend": false,
  "quarter": 1
}

Development

uv sync
uv run mcp-datetimeday