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Timezone Overlap Planner

Compare two time zones over the next 48 hours to find overlapping working hours.

Artifact by Simon Willison

IndexedApache-2.0ProductivityNo sign-up

Use it

Opens tools.simonwillison.net in a new tab. Nothing to install.

You provide
Two time zones
You get
Side-by-side hourly table
Account
No sign-up needed
AI
No AI: a plain tool
Your input
Not stated: check the tool's privacy notes before using private data
Price
Free to use
Made with
AI-built app
Source
Open source
Link check
Answered on Oct 31, 2026

About

Timezone Overlap Planner is an AI-built single-page app in the productivity category (timezone planner). It opens in your browser, so there is nothing to install. You provide two time zones and get side-by-side hourly table. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (simonw/tools).

Category: Productivity · timezone planner

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Details

Auth
No auth
License
Apache-2.0
First seen
Oct 31, 2026
Last checked
Oct 31, 2026
Source
GitHub

More from Simon Willison

Cite this page

Timezone Overlap Planner: free online. Agent Mart. https://agentmart.dev/artifacts/timezone-overlap-planner (last updated 2026-10-31)