The Perihelion Effect

1246 December Solstice was on the same day as the Earth reached its perihelion

In 1246, the December Solstice was on the same day as the Earth reached its perihelion.

Since then, the perihelion and aphelion dates have drifted by a day every 58 years. In the short-term, the dates can vary up to two days from one year to another.

Mathematicians and astronomers estimate that in 6430, over 4000 years from now, the perihelion will coincide with the March equinox.