Few days ago, on may 14th we have had wonderful opportunity to observe multiple display of halos. Whole central Poland seen "colorfull ring on the sky" as the newspapers described it.
Some people thought it's an UFO.
Some thought that God came to give us a sign.
Some claimed that it's a "chemtrail" effect and we are all doomed.
People are funny :]
But most of people havent even looked up on the sky.

It was definitely the strongest halo I've ever seen. It shone on the sky for more than 4 hours but it's full power could have been seen for about 30 minutes. I've noticed on sky 22'Circular halo, Circumscribed halo with wonderfull crispy and colorful tangent arcs and Infraletal Arc! In fact Infraletal I've seen for the first time in my life!
When I later reviewed pictures I've found another halo- Parhelic circle! Also first time in my life.

Pictures and simulation from HaloSim can be found here:
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Full set of unprocessed (tough 50%scaled) pictures can be found here:
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