Hello Aspirant,

Stream 1 Block 1 exams would be conducted by NIOS in the month of March/April 2022 tentatively for session 2021-22 and for session 2022-23 Stream 1 Block 2 examination will be conducted in the month of October/November 2022 and similarly for Stream 1 Block 1 of session 2022-23 the examination would be conducted in March/April 2023.

Exact dates are not out yet so kindly keep checking the official website of NIOS because date sheet is expected to release by end of this month :-

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

I hope this information helps you.

Good Luck!!