The National Institute of Open Schooling (NIOS) has released the timetable for NIOS 10, 12 April-May Exam 2023. According to the schedule, NIOS Class 10, 12 Exams will be held from April 6 to May 8, 2023, in a single shift - from 2:30 PM to 5:30 PM or 2:30 PM to 4:30 PM.