In the Northern Hemisphere, the March equinox is called the vernal or spring equinox while the September equinox is called the autumnal or fall equinox.
The day that the Earth's North pole is titled closest to the sun is called the summer solstice .It is also the day that the sum reaches its highest point in the sky. The winter solstice, or the shortest day of the year,happens when the Earth's North pole is titled farthest from the sun.
