"I thought that the middle of the day in winter, when the sun reaches its peak was at midday."
I'm no expert (so don't laugh if this is well off the mark) but isn't your supposition true only at the winter solstice (Dec 21st this year)?
Surface Pro (2017) vs Surface Pro 4
Where HTML5 is headed next
MacBook Pro v Surface Pro 5
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.