I'm sure this is a great little product and well worth trying, but I figured I'd just mention that for keeping track of my team (distributed across USA/EU/APJ), I have added various relevant timezones to the clock widget in iStat Menus on my Mac (also doable on many/most Linux distro clocks).
nice little tool.
OP works at buffer, and is showing their team's current timezone status.
Thanks for the post! I'm Dan, the creator of timezone the open source project and am now working on a product version at http://timezone.io. Just pushed the new homepage - Hope that helps paint a picture for whats to come there!
Until then, feel free to fork the project, and submit Pull Requests! Would love to hear the ideas you might have :)