Time Zone Converter

Automatically detects time mentions on web pages and converts them to your local timezone with proper DST handling.

Time Zone Converter automatically detects time mentions on web pages and shows the converted time in your local timezone — right next to the original text. ✦ HOW IT WORKS When you browse pages like X (Twitter), news sites, or forums, the extension scans for time expressions such as "9PM ET", "3:00 PM PST", "15:00 GMT", or "9PM London time", and displays a small blue badge with the equivalent time in your timezone. ✦ KEY FEATURES • DST-Aware Conversion Uses the browser's built-in IANA timezone database (via the Intl API) to handle Daylight Saving Time transitions automatically. No outdated offset tables — the conversion is always correct for the specific date. • Smart Date Inference Reads the post's timestamp from the page (e.g. the tweet's datetime on X) and understands relative date words like "tomorrow", "tonight", "next Monday". If a tweet posted on March 31 says "Tomorrow night at 9PM ET", the extension correctly resolves this to April 1, 9PM ET. • Inline Badge Display Converted times appear as compact blue badges right after the original time text. Hover for details including DST status and timezone info. • Same Timezone Skip If your local timezone matches the source timezone, no badge is shown — keeping the page clean. • Dynamic Content Support Works with single-page apps (SPAs) like X/Twitter. New content loaded via infinite scroll is automatically scanned. ✦ SUPPORTED FORMATS • 12-hour: 9PM ET, 3:00 PM PST, 11:45am Pacific Time • 24-hour: 15:00 GMT, 09:15 CET • City names: 9PM London time, 3PM Tokyo time • 50+ timezone abbreviations: ET, EST, EDT, PT, PST, PDT, GMT, BST, CET, CEST, JST, KST, AEST, and more ✦ PRIVACY This extension runs entirely locally. No data is sent to any server. No analytics, no tracking. By Star — https://x.com/starzq GitHub: https://github.com/star23/time-converter