Today is Day of Astronomy - with clouds!

What a pity! Today is the German Day of Astronomy. But after a sunny start, clouds started to cover the sky.

One hour before the planned start, I had to tell my registered visitors that we can't observe the sky today. But we won't give up: We agreed to meet on a later day when we have clear skies.

At least, as today also will be earth hour, we will shut off our lights tonight at 8:30 pm not only to save some electrical power but also to reduce light pollution.