Back in January when we had a bright sunny day, I marked the position of the Midday shadow from my south-facing patio door jamb on the kitchen marley floor with some 2 inch wide blue masking tape.
Yesterday I drew another line at 13:00 BST expecting it to be in exactly the same position as the january line but it is rotated around slightly, which is not what I was expecting.
Why would the increase in the angle which the 'midday' suns rays are hitting Europe alter the angle of the shadow ?.
Is there some extra maths that I have overlooked ?
Also, my Olympus Tough TG6 camera indicates a compass when the info button is pressed and according to that North is way off my floor markings. I only expected it to be indicative, but not that far off.
Andrew