Do you mean the shortest of the year on summer solstice?
I'm confused by your statement... Isn't the shadow the shortest for any given day at (geographical noon) for that day?
I'm confused by your statement... Isn't the shadow the shortest for any given day at (geographical noon) for that day?
https://www.timeanddate.com/sun/uk/greenwich-city
Even in Greenwich, 12 noon winter time can be off of solar noon by about 15 minutes in either direction throughout the year.