Times of Salaah

Q: If fajar azan is at 4:45 am then what's the maximum last time tahajjud can be offered?

Q: A lot of people tell me that you can delay isha prayer till midnight, is this true?

Q: Is my Fajar, Zuhar, Asar, Maghrib and Isha valid if I pray them while azan is in progress?

Q: I got wrong time by mistake and prayed Fajr after sunrise and Zuhr at Asr time Asr at Maghrib and Maghrib at Isha time. So do I have to pray qaza or should I count the wrong time salah as qaza?

Q: If sunrise starts at 6:26 am and I finished my Salatul Fajr at 6:26 am, do I need to offer qadha or not?

When does zawaal time end? 

Q: One day I forgot to offer zuhr salaah and remembered it only 20 min before Asar salaah. I performed the zuhr salaah. Will it be considered as qaza or is it done before Asar time?

Q: A person has a urine problem, where if he goes to the toilet, for the next 30-45 minutes he cannot read salaah due to urine drops. If the time of salaah is about to end and the condition persists, does he have to make Wudu and perform salaah, or let the salaah become qadhaa and perform it after the time has expired. (The person is not a ma'zoor as the condition did not last for an entire salaah time)

Q:

1. Is our namaz valid if the Imaam combines two namaazes (zuhr-asr or maghrib-isha) as per Hambali maslak?

2. What is the procedure to be followed by a Hanafi follower if the bus driver does not stop for the maghrib prayer because the Hambali people do combine the namaazes later during isha?

Q: In my college, Maghrib azaan was called four minutes early and I respectfully told the brother to make the adhaan again. He refused but the Jamaat was performed on time though. Will my salaah be valid? Do I have to repeat my salaah and did I do the right thing?

Q: My mom said that we should not pray fajar prayer right after adhaan and we should wait for 15 minutes. Is it true and if it then what's the reason behind this?