JKBOSE Revised Date sheet Class 10th. Jammu and Kashmir Board of School Education Revised Date sheet for State Open School (SOS) Candidates of Jammu/Kashmir including Leh/Kargil (Class 10th) Session 2017 Bi-Annual/Annual(Regular)2018-19. JKBOSE CLASS 10th SOS REVISED DATE SHEET. Timings: 11:00 A.M DAY DATE SUBJECT/PAPER Wednesday 10-03-2021 English Friday 12-03-2021 Mathematics Saturday 13-03-2021 Social Studies Monday