Hello Aspirant,

Hope you are doing great.  The NIOS is the National Institute of Open Schooling on the official website. The Public Examinations are held twice a year in the months of April-May and October-November on dates fixed by the NIOS.  The open board exams will be conducted from the date of 4th April to 30th April 2022 according to NIOS 10th date sheet 2022.

All the best