The Sun in the sky during the Spring and Fall Equinox in the Northern
hemisphere.
 
 
The Sun is at its lowest path in the sky on the Winter Solstice. After 
that day the Sun follows a higher and higher path through the sky each 
day until it is in the sky for exactly 12 hours. On the Spring Equinox 
the Sun rises exactly in the east travels through the sky for 12 hours 
and sets exactly in the west. On the Equinox this is the motion of the 
Sun through the sky for everyone on earth. Every place on earth 
experiences a 12 hours day twice a year on the Spring and Fall Equinox.
After the Spring Equinox, the Sun still continues to follow a higher and 
higher path through the sky, with the days growing longer and longer, 
until it reaches it highest point in the sky on the Summer Solstice.
 
  Sun
Path
Sun
Path
   
 sundials
 sundials
    Summer Solstice
Summer Solstice