The equinox is an annual event that happens twice a year, in March and September, when the Sun's rays fall directly on the equator.

PM IST, the September equinox will occur, marking a significant astronomical event. This moment signals the Sun's crossing of the celestial equator from the Northern to the Southern Hemisphere, resulting in nearly equal hours of day and night across much of the globe,

During an equinox, places around the globe experience nearly equal amounts of daytime and nighttime. The second occurrence this year happens on Sunday.