SSC CHSL Examination 2020 online applications last date extended. SSC Combined Higher Secondary (10+2) Level Examination 2020. The last date for receipt of online applications for Combined Higher Secondary (10+2) Level Examination, 2020 has been extended upto 26.12.2020. The important dates are as follows:- Last date and time for receipt of online applications: 26.12.2020 (23:30)