I'm about to begin hangar construction at Beverly Municipal Airport - KBVY.  :-)
Placement of the door will be to the south but I'd like to be a bit more specific than that.
So for those of you who may be skilled in the black art of trig and celestial navigation, here is the brain teaser.
What is the magnetic bearing of the sun at noon on December 21st at location:

42-35'02.55"N / 70-54'35.43"

Thanks in advance!

Angier Ames
N4ZQ