World Clock — Time Zones & Office Hours

About

This extension adds a world clock to your browser toolbar using a clean high-contrast design inspired by airport departure boards: white LED-style text on a black background. It lets you track current times sunrise sunset and working hours for multiple locations with one glance. The toolbar icon shows the current time for your main location. 

You can choose 24-hour or 12-hour format and decide whether to display the full city name initials or nothing but the time. The display updates in real time. Clicking the icon opens a popup showing your list of cities and time zones. You can search and add locations by city name airport code such as JFK or LHR or country name. Locations can be reordered by dragging them. 

The extension automatically handles daylight saving time changes. Each entry shows both an analog clock face and digital time. There is also a compact view that fits more clocks on the screen at once. For every location the popup includes today's exact sunrise and sunset times a countdown of remaining daylight hours and a simple visual indicator showing whether it is currently day or night there. You can set custom working hours for any location such as your office clients or family contacts. 

The extension then shows a green open or red closed status along with the time until the next open period or the time since it closed. This makes it easier to coordinate across time zones without doing the math yourself. Customization includes several color themes: classic airport black with amber accents modern light mode and a dark black theme friendly to OLED screens.

Privacy policy: This extension does not access store or transmit any personal information.