Refers to a high point or culmination, often used metaphorically.

A term used in astronomy to describe the point in the sky directly above an observer.

खगोल विज्ञान में एक बिंदु

English Usage: At midnight, the star was directly at its zenith.

Hindi Usage: रात के बारह बजे, सितारा सीधे अपने ज़ेनिथ पर था।