zuhr

End of Zuhr time

Q: What time does Zohar Salaah become Qadha. Does Zohar end at the time Asr starts? I see that the Shafi time for Asr is 15:15 and for Hanafi it is 16:03. I do understand the the shadow of an object needs to be twice the original size plus the bit that was there at midday. I am asking in regards to the times for the Salaah. This is the time in Durban.

Omitting Salaah in college

Q: I usually get dropped off to college around 9AM and by the time I get picked up from college, the time for zuhr and asr prayer are already passed. Is it sinful for me to not be praying those salah? Is it okay for me to make up for the missed salah by praying the optional rakats of Maghrib and Isha?