Convert times, plan meetings. Convert a time between cities and find meeting times across time zones, with daylight saving time handled exactly.
https://plugins-worker.demos.42a.ai/time-zone-converter/mcpSettings → Security and login → Developer mode → chatgpt.com/plugins → + → paste the URL. After a tool change: Refresh, then a new chat.
| Prompt | Tool | Expected |
|---|---|---|
| What time is 3 PM New York on October 15, 2026 in London and Tokyo? | convert_time | London 8:00 PM (BST, UTC+1) the same day; Tokyo 4:00 AM on Fri, Oct 16 (+1 day). |
| My client in LA wants a call at 9am their time on Oct 28. What time is that for me in London? | convert_time | 4:00 PM in London (7 hours ahead, not the usual 8), with notes that London changed clocks on Oct 25 and Los Angeles changes on Nov 1. |
| Convert 10:00 IST to EST on December 1, 2026 | convert_time | 11:30 PM on Mon, Nov 30 in New York (EST, UTC−5), the previous day. |
| Find a 1 hour meeting time for our New York and London teams on October 6, 2026 | find_meeting_time | Best slot 10:00 AM New York = 3:00 PM London (both in hours); the overlap is 9:00 AM-12:00 PM New York (3 hours). Offers .ics and Google Calendar. |
| Find a 1 hour slot for New York and London between Oct 22 and Oct 28, 2026 | find_meeting_time | Best slot Mon, Oct 26, 10:30 AM New York = 2:30 PM London: after London changes clocks on Oct 25 the overlap grows from 3 to 4 hours. The DST change is called out. |
| How many days until my flight on December 20? | none | Counting days between dates is date arithmetic, not a time-zone conversion. |
| Schedule a meeting with Sarah tomorrow at 2 PM on my Google Calendar. | none | Booking on the user's real calendar needs a calendar integration; no time zones are involved. |
| Why do we have daylight saving time? | none | A history question the model can answer without any conversion. |