Astronomical Year Apr 2026

The time between two consecutive perihelion passages (the closest point to the sun) (approx. 365.2596365.2596

An is the time it takes for Earth to complete one full revolution around the Sun, a duration that defines our seasons and differs slightly depending on the reference point used. While our civil calendar uses 365 or 366 days, the actual astronomical, or tropical year , is approximately 365.24219365.24219 astronomical year

Early calculations used a 360-degree circle to chart the sky, creating the basis for modern astronomical time. The time between two consecutive perihelion passages (the