Hi Aspirant,

For NIOS on-demand examination , for the theory paper of the subjects the days and time allotted are: Tuesday, Wednesday and Thursday (for regional centres) and Tuesday,Wednesday,Thursday and Friday for HQ NOIDA from 2.00 pm to 5.00 pm . For practical examination days are: every Friday/Saturday on weekly basis or as announced on the day of the theory paper.

For more elaborated information I recommend you to visit the official website of NIOS,

https://www.nios.ac.in/

Hope this helps.

All the very best!!!