Hello, jntuh has officially announced that the opening date of the coarses to btech studnts is from  7th july and the candidates who secure themselves into the second and third counselling can go into the college  with the time period of the last of the month.., you can also find the complete details about the study sessions in the academic calenders that jntuh provide in the open source..,hope you got my answer all the best for your future.