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Castov
TIME ZONES

Timezone Travel Simulator

Slide through time to visually verify how a single point in time resolves across multiple global cities simultaneously.

00:0006:0012:0018:0024:00

Tracking Timezones

UTC
12:00
Wed, Oct 14
America/New_York
08:00
Wed, Oct 14
Asia/Tokyo
21:00
Wed, Oct 14

Why a Simulator?

Building distributed systems means dealing with events happening globally. A standard converter shows you static times, but a simulator lets you drag a slider and instantly see how day and night shift across regions. It's the ultimate tool for debugging cron jobs, deployment windows, and global push notifications.

How to use this tool

  1. Add the timezones you want to track (e.g., Tokyo, UTC, PST).
  2. Drag the slider along the 24-hour axis.
  3. Watch the local times update synchronously to verify overlap hours.

Examples

Frequently Asked Questions

Does this affect other browser tabs?
No, the override is isolated to the current Service Worker scope or injected script execution context.

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