Timezone Spoofer

Timezone Spoofer lets you override your browser's timezone to any location worldwide. Perfect for developers, QA testers, and anyone who needs to simulate different time zones.

KEY FEATURES

• 400+ IANA Timezones — complete database covering every region • Instant Search — find timezones by city, country, region, or UTC offset (33,000+ city names indexed) • Easy Toggle — enable/disable spoofing with one click • Site Exclusion List — disable spoofing on specific domains • IP Auto-detect — automatically detect timezone from your IP address • Theme Support — Light, Dark, and System theme options • Keyboard Navigation — navigate timezone list with arrow keys • Tabbed Interface — clean Main and Settings tabs with category navigation • Toast Notifications — confirmation for every action • Per-tab Badge — see spoofing status (active, excluded, disabled) at a glance • Multilingual — English and Russian interface • Works everywhere — overrides timezone APIs in all frames including iframes

HOW IT WORKS

1. Click the extension icon in Safari's toolbar
2. Enable timezone spoofing with the toggle
3. Search for your desired timezone (e.g., "Tokyo", "Miami", "UTC+5")
4. Select from results — the page reloads automatically

The extension overrides JavaScript's Date and Intl.DateTimeFormat APIs to return values for your selected timezone. All data stays local in your browser.

PERFECT FOR

• Testing timezone-dependent web features • QA validation of international applications • Debugging date/time displays and calendars • Simulating user experiences across the globe • Checking timezone-specific content

PRIVACY

• No data collection or tracking • No analytics • All settings stored locally in your browser • Optional IP detection uses a configurable public API (off by default) • No personal data is transmitted