The cirrus has thickened and the halo's colours are more subdued.
A contrail crosses the sun and casts a shadow downwards onto the lower halo forming cirrus layer.
Long Lived Halo
Emma Taylor (Emma Taylor's Photographs) saw this 22 degree halo over Cheshire, England on May 1, '15.
The halo lasted almost three hours and the images capture the changes from delicate colours in cirrus wisps to the more subdued and 'solid' halo we see in thicker cirrostratus.
Europe has had many halos (1,2) over the past few days - may it continue!
All images ©Emma Taylor, shown with permission
The short radial streaks from the sun are a lens effect. ignore them.