iBeatTime for Mac

From e dot studios:

iBeatTime is a clock that uses Swatch Beats. This way of representing time eliminates the use of timezones making it the same all over the world. In other words, all countries of the world will have the same beats. In addition, iBeatTime features a list you can use to add your favorite places and see what time it is over there, it also has a converter which can convert any local time to beats or vice versa, and you can add see information like the abbreviated name of the timezone you're currently in, the GMT offset, local time and UTC time. You can also add iBeatTime to your login items and you can use AppleScript to create scripts.