Refers to the position of the sun when it is high in the sky, typically around noon.

Used metaphorically to describe a peak time or period of something.

किसी चीज़ का चरम समय

English Usage: Her career reached a high sun when she won the award.

Hindi Usage: जब उसने पुरस्कार जीता, तो उसका करियर एक ऊँचे चरम पर पहुँच गया।