Every 18.6 years, the moon rises and sets at its northernmost and southernmost places on the horizon during a great lunar standstill.
The Griffith Observatory in Los Angeles predicts that the full moon will reach its furthest north in the sky on December 15.
According to Space.com, it happens when the moon’s orbit diverges from that of the sun. “Its rising and setting positions on the horizon change constantly due .
To the movements of Earth and the moon,” according to Space.com. The significant lunar standstill is said to have influenced the construction of Stonehenge,
