# worldclock.pro

> Live time, time zone conversion, world clock, time zone reference and Zulu/UTC tools. Pages are server-rendered with current times, UTC offsets, DST status and structured data (JSON-LD), so the key fact is always in the first paragraph.

worldclock.pro is built by the team behind the World Clock Master (iOS), World Clock Pro (Mac) and Zulu Time (iOS) apps.

## Core tools

- [Time zone converter](https://worldclock.pro/en/convert): convert time between any two cities or time zones
- [City-to-city conversion pages](https://worldclock.pro/en/convert/london-to-new-york): URL pattern /en/convert/{from}-to-{to} — works for city→city (london-to-tokyo), zone→zone (est-to-ist), and mixed (london-to-est). Each page includes the current time difference, a 24-hour conversion table and the best business-hours overlap.
- [World clock](https://worldclock.pro/en/city): current local time in major cities, sorted by UTC offset
- [City pages](https://worldclock.pro/en/city/london): URL pattern /en/city/{city} — current time, time zone, UTC offset, DST status and next transition, sunrise/sunset
- [Time zone reference](https://worldclock.pro/en/timezone): all major abbreviations (EST, PST, GMT, CET, IST, AEST…) with UTC offsets and live times
- [Time zone pages](https://worldclock.pro/en/timezone/est): URL pattern /en/timezone/{abbr} — full name, fixed/DST behavior, where it is used, current time
- [Meeting planner](https://worldclock.pro/en/meeting): business-hours overlap between cities
- [Zulu time](https://worldclock.pro/en/zulu-time): live UTC/Zulu clock with NATO time zone letters, for aviation, military and HAM radio

## Apps

- [World Clock Master for iPhone and iPad](https://worldclock.pro/world-clock-master): time zone scheduling with widgets and a 24-hour dial
- [World Clock Pro for Mac](https://worldclock.pro/mac): menu bar world clock and meeting scheduler
- [FAQ](https://worldclock.pro/faq)

## For agents

- MCP server (live, public, read-only, no API key): https://worldclock.pro/mcp — Streamable HTTP, five tools: get_current_time, convert_time, time_by_coordinates, get_dst_transitions, search_cities. Tool results include a source_url citing the matching page.
- Connect from Claude Code: `claude mcp add --transport http worldclockpro-time https://worldclock.pro/mcp`
- Setup instructions for Claude Desktop, Cursor, VS Code, ChatGPT and OpenClaw: https://worldclock.pro/mcp
- Server card (machine-readable manifest): https://worldclock.pro/.well-known/mcp/server-card.json
- AI resource catalog: https://worldclock.pro/.well-known/ai-catalog.json
- Skill + plugin repo (Claude Code plugin, agent skill): https://github.com/worldclockpro/worldclock-mcp

## Notes for agents

- Times on every page are rendered server-side at request time and carry ISO 8601 timestamps in <time datetime="…"> elements with explicit UTC offsets.
- City ↔ time zone mapping is stated in plain text near the top of every page (e.g. "Sydney currently observes Australian Eastern Standard Time (AEST/AEDT, UTC+10)").
- All data derives from our weekly-updated database of 224,000+ locations and time zones (IANA tzdb).
- Sitemap: https://worldclock.pro/sitemap.xml