This is really cool. But showing Fahrenheit, despite everything else is perfectly localized, for my home town Hamburg in Germany, is somewhat useless. Guys from the US, we use Celcius here! :-P
you can change the unit in settings, just click the gear on countdown page
Ah, nice, thank you very much. But it is impossible to reach the countdown page once you are in. So it is almost impossible to make the switch, because you notice the Fahrenheit thing only if it is too late. And it looses the setting after a reload..