Meridock: World Clock & Timezone Converter

World clock and time zone converter for your toolbar: see the time in India, Germany, New York or any of almost 600 cities, plan a call across zones and convert a time you select on a page.

• Pinned cities. Up to 20 places with live times, the difference from you (+3:30 h) and from UTC, and Tomorrow or Yesterday when the date is not the same. Add a label such as “Pune office” or “Mom”.
• Day and night at a glance. Under every city a strip shows night, dawn, daylight and dusk across your day, worked out from the city's position, with a thin rail for its work hours (9 to 18 by default, adjustable). The part of the day is written in words too.
• Meeting planner. Drag one line across all the strips, or use the arrow keys, and every clock follows. The time you pick stays after you close the popup until you press Now. Copy puts “Wed, Oct 21 · 15:00 Berlin · 18:30 Pune office · 06:00 San Francisco” on the clipboard.
• Convert a time on any page. Select “3 pm EST”, “4–6pm ET”, “Oct 21, 18:00 BST” or “10:00 UTC+5:30”, right-click and choose Convert to my time. A small card shows your time and the time in your cities.
• It asks when a zone is unclear. IST can be India, Israel or Ireland; CST can be US Central or China. Meridock picks the likely one from your language and your cities, lets you switch with one click and remembers your choice.
• Daylight saving time is always right. Times come from the browser's own time-zone data, so there is no table inside the extension that can go out of date.
• Search by city, country, country code, abbreviation (EST, CET, IST) or offset (UTC+3), in English or in your language.
• Big clocks in a full tab for a second screen, the time of one city on the toolbar icon if you want it, light and dark themes, 16 languages and full keyboard control.

Private by design: Meridock has no access to your sites. It looks at a page only when you choose the menu item, and only in that tab. No account, no server, no analytics; everything stays in your browser. Works offline in Firefox and Opera. This version is free.

Permissions: contextMenus adds “Convert to my time” to the right-click menu; activeTab and scripting read the selected time and show the card only in the tab where you chose that item; storage keeps your cities and settings; alarms refreshes the time on the icon and clears an old conversion.