December 22 is the day when the North Pole is tipped farthest from the sun.
(December 22; is; the day when the North Pole is tipped farthest from the sun) (the North Pole; is tipped; L:farthest from the sun; T:the day)
December 22 the North Pole
is is tipped
the day when the North Pole is tipped farthest from the sun
L:farthest from the sun T:the day