Helmiäispilviä - 5.12.2016 at 16.00 - 5.12.2016 at 16.50 Turku
Observation number 58710
Would there already be pearl clouds here? The night cloud-like sight and the deviating norm from the upper clouds were the most severe.
The clouds shone dimly still at 4:50 p.m., with the sun already -9.0 degrees below the horizon. Even the Arcturus star was already well visible above the clouds.
I think this fact favors pearl clouds, but let the jury end :)
The photos are from 16:00 to 16 October.