The thermometer of our neighbours showed -12.1°C. This thermometer is just at the outside of the wall. The coldest night in the last seven years in Hesse. My fingers get too cold riding (by bike) my 2 km from the train station to work that it hurt. We had about -17°C outside the villages.

But the sunrise was fascinating. A shame that I have no time to go to a place to take pictures of the industrial zones near here. With those temperatures the smoke of the chimneys looks impressive.