Time Zones
http://everytimezone.com/

Timezones made usable (by @amyhoy and @thomasfuchs)

Amy Hoy & Thomas Fuchs created another beautiful Javascript/HTML5 website that's earned a place on my bookmark bar.

Nice visualization of timezones.

时区查询

A nice way to present international timezones.

Never warp your brain with that time zone math again.