The Union Public Service Commission (UPSC) has released the time table for the Combined Geo-Scientist Mains exam 2023. As per the schedule, the exams will be held on June 24 and 25, 2023, in two shifts. Candidates can check the time table on the official website of UPSC - upsc.nic.in. The first shift will be conducted from 9 am to 12 noon, while the second shift will be held from 2 pm to 5 pm.