Spring- This is when temperatures gradually begin to rise right before summer. March 20 or 21 is when the Vernal Equinox happens, causing 12 hours of both night and day. Spring is also when birds migrate upward from below the equator, flowers and trees bloom, and animals are born or come out of hibernation due to the warmer temperatures.

Fall- This marks the transition from summer into winter, where temperatures begin to decrease. One major change is the loss of leaves on deciduous trees and difference in color. The Autumnal Equinox also occurs during the season of fall, when day and night have equal duration.

Spring/fall

Both Spring and Fall are a result of tilt towards the North Star . They have the same amount of daylight hours and direct sunlight energy and angles.