TimeShift – Timezone Converter 作者： Sheikh Abir Ali

⏱️ TimeShift — the fastest way to convert time zones in Firefox. No new tabs. No typing into search engines. Just right-click any time on any page and get the answer instantly.



🖱️ Two Ways to Convert

① Right-click any time on any webpage
Select a time in any email, Slack message, meeting invite, or news article → right-click → Convert Time with TimeShift → a floating panel shows the result instantly.

② Use the popup manually
Click the toolbar icon, type any time, choose From and To timezones from 285+ cities worldwide, and hit Convert.



✨ Key Features

• Right-click conversion on any webpage — no tab switching
• 285+ cities & timezones — every country, every major city
• Exact date shown — "22 Feb 2026 — Sunday", not just "Next Day"
• AM/PM, 24-hour & abbreviations supported (EST, BDT, IST, PST…)
• Day-shift detection — same day, next day, or previous day clearly flagged
• Copy to clipboard in one click
• Remembers your preferred timezone pair
• 100% offline — works without internet after install
• Zero data collection — nothing ever leaves your device

🌍 Perfect For

Remote workers · Freelancers with global clients · Developers on distributed teams · Digital nomads · Anyone who sees "3:00 PM PST" and needs to know what that means right now



🔒 Privacy First

Everything runs locally using your browser's built-in timezone engine. No servers. No accounts. No tracking. No ads. Ever. Your data stays yours.



💡 Pro tip: Select "10:30 AM EST" on any page → right-click → Convert — done.



Built by Sheikh Abir Ali · Full-stack developer & browser extension builder