Hi

INPhO is Indian National Physics Olympiad is the second stage of the five-stage Olympiad program for Physics in India. It ultimately leads to the selection of the International Physics Olympiad. The INPhO Exam is conducted on the last Sunday of January (or on the first Sunday of February), every year, by the Homi Bhabha Centre for Science Education.

This year the starting date of enrollment of INPhO tentatively is September 15, 2021 and the exam day will be on a Sunday in January 2022.

Hope it helps.