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Time zone planner

Find your shared moment, wherever everyone happens to be.

  • America/New_York
  • Asia/Tokyo

Choose a date and time to compare locations.

Use this tool in your workflow

Protected JSON API; disabled by default. An approved account and bearer API key are required. Invalid input returns HTTP 400. POST requests accept application/json.

POST /api/tools/time-zones
{"local":"2026-09-14T14:00","zone":"Europe/London","zones":["America/New_York","Asia/Tokyo"],"disambiguation":"reject"}
View parameters and examples →

What it does

Find your shared moment, wherever everyone happens to be.

How to use it

  1. Enter the meeting date and time in your source time zone. Add up to 12 locations using IANA names such as Europe/London or Asia/Kolkata.
  2. Daylight saving is calculated for your selected date. Skipped or repeated times ask for a decision; earlier/later selects the corresponding instant and the resolved source time is shown.
  3. The working-hours indicator means Monday–Friday, 09:00–17:00 local time. It does not include holidays or individual schedules.

Example

On 14 September 2026, 14:00 in Europe/London is 09:00 in America/New_York and 22:00 in Asia/Tokyo.

Methodology

Temporal resolves a dated local time to an instant, then converts it to each destination IANA time zone.

Limitations

Up to 12 destinations. The weekday 09:00–17:00 indicator excludes holidays and personal schedules.

Automation

A protected JSON API is documented for this tool. Execution requires deployment enablement and an approved account’s API key.

View capabilities and documentation

Reference updated

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