TZ Clock is a productivity chrome extension. it's a free extension , it has 402 active users since released its first version, it earns an average rating of 3.67 from 9 rated user, last update is 2791 days ago.
Adds a clock icon to your toolbar, when clicked it will display a popup with simple calendar and time in several time zones of your choice.
You could download the latest version crx file or older version files and install it.
English.
50% user give 4-star rating, 50% user give 1-star rating. Read reviews of tz clock
You could find more help information from tz clock support page.
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Simple, yet effective. Easily customized.
it is not big
It's a little hard to set up but it does what I need and I like that it shows 24h time and it's easy to read. Potential improvements for future versions: darker type for city names, an option to hide the calendar, and an option to show the date in each of the foreign time zones displayed.