The Union Public Service Commission (UPSC) will held the UPSC Engineering Services Examination (ESE) mains today, June 25, 2023. The UPSC Engineering Services (IES) 2023 mains exam will be held in two shifts today. The first shift will start from 9 am to 12 noon and be held for paper 1, while the next will begin at 2 pm for paper 2.