Date Math
Date/time math for agents: business days, holidays, time zones, cron, RRULE. 25 free calls/day.
What it does
Date Math is an MCP server, a connector that lets an AI assistant use it as a tool. It can be used hosted (nothing to install) or installed locally.
No capability identified yet from its description.
Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.
At a glance
How to connect
As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 10h ago (live check)Hosted endpoint
https://date-math.datemath.workers.dev/mcpstreamable-http
In Claude Code: claude mcp add --transport http date-math https://date-math.datemath.workers.dev/mcp
Install package
- NPM
date-math-mcpv1.5.0 · runs locally (stdio)
MCP settings (Claude Desktop, Cursor and other MCP clients)
{
"mcpServers": {
"date-math": {
"url": "https://date-math.datemath.workers.dev/mcp"
}
}
}Live check
Electra Index connected to the hosted endpoint 10h agoONLINE Date Math answered an MCP connection on 07 Nov 2026 and introduced itself as date-math 1.2.0 (MCP protocol 2025-06-18).
11 tools offered to AI assistants
date_diff· Difference between two dates or datetimes: calendar (Y/M/D), total days/weeks/hours, and business days (weekdays in [from, to) minus holidays; pass country to exclude its public holidays). Costs $0.001 per call (x402).date_add· Add or subtract years/months/weeks/days/business days/hours/minutes/seconds. Month-end clamping; business days skip weekends, given holidays, and the public holidays of an optional country. Costs $0.001 per call (x402).timezone_convert· Convert an instant or local wall-clock time between IANA time zones (DST-aware). Costs $0.001 per call (x402).date_info· Calendar facts for a date: weekday, ISO week, quarter, day of year, leap year, weekend. Costs $0.001 per call (x402).public_holidays· Public holidays for a country and year: 207 countries, 2000–2050. Lunar or government-proclaimed dates are rule-based estimates. Costs $0.001 per call (x402).working_hours_overlap· Find when working hours overlap across time zones (meeting windows). Per-participant hours optional; skips weekends by default; up to 14 days. Costs $0.001 per call (x402).cron_schedule· Explain a cron expression in plain English and list its next run times in any time zone. Costs $0.001 per call (x402).parse_date_text· Resolve natural-language dates like "next Friday at 3pm", "in 2 weeks" or "Dec 25 to Jan 2" to exact datetimes, relative to a reference time and time zone. Costs $0.001 per call (x402).city_time· Find the IANA time zone and current local time for up to 10 cities by name ("Cebu", "São Paulo", "Springfield" + country). 7,000+ cities. Costs $0.001 per call (x402).recurring_dates· Expand an iCalendar RRULE ("every 2nd Tuesday", "Mon/Wed until June") into concrete dates and times in a time zone, DST-aware, with optional excluded dates. Costs $0.001 per call (x402).business_hours_deadline· SLA math in working hours: the deadline N business hours after a start time, or business time elapsed between two times. Custom hours and workdays, holidays, country public holidays, DST-aware. Costs $0.001 per call (x402).
What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method
Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.
Facts & evidence
Each fact shows where it was seen and when.| Fact | Value | Evidence | Source | Last confirmed |
|---|---|---|---|---|
| Install package | date-math-mcp | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Package registries | npm | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Local install (package) | yes | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Website | https://github.com/JowenDelaPena/date-math | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Version | 1.5.0 | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Hosted endpoint | https://date-math.datemath.workers.dev/mcp | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Remote access (hosted) | yes | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Repository | https://github.com/JowenDelaPena/date-math | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| Registry status | active | DECLARED | SRC-001 Official MCP Registry | 4h ago |
| MCP server | yes | DECLARED | SRC-001 Official MCP Registry | 4h ago |
Change history
- CHANGED07 Nov 2026local install: no → yes
- VERSION07 Nov 20261.4.0 → 1.5.0
- VERSION07 Nov 20261.3.0 → 1.4.0
- VERSION07 Nov 20261.2.0 → 1.3.0
- NEW07 Nov 2026first seen in the index
Is this page accurate?
Flag it and our robot re-checks the official source. Reports never change a score.Is Date Math still online?
Free alerts · no account▲ 0Do you run Date Math? Know when it stops answering
For publishers · optionalIts hosted endpoint can be monitored. Monitoring Pro connects every 30 minutes like an AI assistant, emails you within the hour when it stops answering, keeps a 90-day availability history and adds your answer rate to your badge.
Monitoring never changes a score or a rank.
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How do I connect Date Math?
Use the hosted endpoint https://date-math.datemath.workers.dev/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.
What tools does Date Math offer?
When Electra Index connected on 07 Nov 2026, it listed 11 tools: date_diff, date_add, timezone_convert, date_info, public_holidays, working_hours_overlap, cron_schedule, parse_date_text and more. The full list is in "Live check" above.
Is Date Math online?
Yes. Its hosted endpoint answered an MCP connection from Electra Index 10h ago.