What is the first day of Spring in the Northern Hemisphere?
March 20
June 22
September 22
December 22

What is the latitude of the sub-solar point on the following days?
(click on each line to see the answer)

September 22nd?

December 22nd?

March 20th?

June 22nd?

February 11th?

May 1st?

July 1st?

October 31st?

For each of the following images, figure out:

• The date
• the number of hours of daylight in Baltimore
• the number of hours of daylight in Sydney, Australia
• the number of hours of daylight in the Arctic Circle
• click on each photo to find out the answer.

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