Is it permissible for me to shorten and combine my Dhuhr and Asr prayers at the university, knowing that the distance between my home and the university is 95 km, and that I arrive there at 1:30 PM and cannot leave the lecture, and I return home at Maghrib? And what is the legally determined distance for shortening prayers while traveling?

The distance at which a traveler may shorten prayers and combine them is approximately 83 km. The mentioned distance (95 km) is considered a distance for shortening prayers if it is after passing beyond the city limits. It is permissible to combine the Dhuhr and Asr prayers during the time of Dhuhr, and it is not permissible to delay the Asr prayer beyond its time.