At what time of the year will the shadow of a vertical pole (a sundial) at any site in the northern hemisphere be the shortest?
A) noon, December 21, at the beginning of winter
B) noon, June 21, at the beginning of summer
C) noon, August 5, midsummer
D) dawn, June 21, at the beginning of summer

Question

Quizplus · Accepted Answer

The shadow of a vertical pole will be the shortest at noon on June 21, the beginning of summer in the northern hemisphere, because the Sun is at its highest point in the sky on this day, the summer solstice.

At What Time of the Year Will the Shadow of a Vertical