Polar Stratospheric Clouds

When I came home from work the sky was like artwork! 
Glitský or nacrous clouds:
"These clouds, also known as iridescent clouds or mother-of-pearl clouds, are a rare and stunning atmospheric phenomenon that occurs when sunlight is diffracted by small water droplets or ice crystals in the clouds. They display a colorful, pearlescent sheen, often showing shades of pink, blue, green, and violet. The effect happens when the cloud particles are very small—usually less than 10 microns in diameter—allowing them to scatter light in a way that creates this beautiful, shimmering effect.
Iridescent clouds are most commonly seen in high-altitude cirrostratus or cirrocumulus clouds, typically at dawn or sunset, when the sun is low on the horizon and the light is just right. They are more likely to appear in the presence of certain atmospheric conditions, such as moisture and specific temperatures that allow for the formation of small water droplets or ice crystals in the clouds."


...and every day we get a few minutes more light in the afternoon...