for accurate result dates, it would be better to contact SPSC head office or visit the regional office.
Contact of SPSC is as following:

Head Office, Hyderabad
Thandi Sarak, Hyderabad, Sindh
Phone # 022-9200694, 246
email: info@spsc.gov.pk

Regional Office, Karachi
2nd Floor, Sindh Secretariat Building No. 06, Karachi
Phone # 021-99218343

Regional Office Sukkur
Bangalow No. B-156, Friends Cooperative Housing Society (Akhwat Nagar) Near Gole Masjid Airport Road, Sukkur
Phone # 071-5815123

Regional Office, Larkano
Near Main Gate, Board of Intermediate & Secondary Education, Rato Dero Road Larkano
Phone # 0332-2517890
( larkana office has been moved to a new place, it would be better to call and confirm their location )