July 2020 session of O/A/B/C Level Examinations (Theory & Practical) which was re-scheduled to be held tentatively in September 2020 will now be conducted in January 2021 along with January 2021 Session. The date sheet for the same shall be made available at the website of NIELIT in due course. The examinations in Revision-IV for O/A level shall now be available to eligible candidates up to July 2021 session. 


Source:

http://nielit.gov.in/sites/default/files/headquarter/pdf/200901_Notice_OABC.pdf