Popping in WAY late to leave a review on the off chance someone sees this. Last updated 4 years ago with no user ratings or reviews.

It's exactly what it says it is, and exactly what I was looking for: a quick click to compare my current local time to other common time zones. Includes UTC, EST, BRT, & CET.

It's simple, does its job. Negligible on resources and no permissions necessary. Simply a reference. Nothing more, nothing less. It's the only addon I found with this functionality. Thanks!