‘Twice a year, day and night reach a perfect balance of 12 hours each, creating a little-known event called the equilux.

The equilux brings equal hours of day and night.

Many of us think that an even balance of day to night happens during an equinox. After all, the word translates as “equal night.”

So, a little confusion is understandable. But there’s a subtle time difference between an equinox and an equilux.…’ (via Time and Date)

Two surprising facts learned from this article — that the point of equal day and night is not on the equinox but depends on my latitude; and that, because the sun is a disc and not a point, there are no days of exactly equal lengths of day and night on the equator.