Various Masaa'il

Q: If a couple of people are musaafirs in a city and decide to perform Zuhr Salaah in their hotel rather than go for jumuah, is it then:

(a) Best for them to pray zuhr salaah individually rather than making a jamaat OR

(b) Obligatory for them to pray zuhr salaah individually rather than making a jamaat OR

(c) Best for them to make a jamaat for zuhr salaah?

Q: My question is related to Salaah and flying by air.

Sometime ago we flew from Australia to Canada. We set out at around 7.00 am on Tuesday, and we reached at around 7.15 am Tuesday, on the same date. The flight was 17 hours, and in this time we didn't read any Salaah. In fact, the next Salaah we read was Dhuhr almost 24 hours later. Is this correct?

However, when we were returning to Australia, we lost a day, so basically a whole day's worth of Salaah became qadha. We jumped a whole day, or we lost a whole day, when we were crossing the international date line. How does this work? How do we calculate Salaah in these situations? Were we supposed to read any Salaah on the way to Canada keeping in mind the Hadith about after Dajjaal comes one day will be equal to a year, and so forth. Hence Salaah would have been calculated according to its normal time, as Nabi Sallallahu Alayhi Wa Salam had advised his Sahaabah? 

Q: If a musaafir, during his safar from Joburg to Umzinto (supposing Umzinto has an airport), flies over his hometown (Watn-e-Asli), Overport. While flying over Overport, will it be regarded as though he entered his hometown and his safar ended? Since the distance between Overport and Umzinto is not safar distance, if the time of Asar Salaah enters, will he read Qasar Salaah?

Q: A person lives in Isipingo Beach and has been living in Isipingo for more than 20 years. He has a house and owns and runs two businesses in Ispingo. He still lives and works in Ispingo Beach for most of the year. This person bought a flat in Surat, in a street where his grandfather used to live, and passed away many many years ago. He goes to the flat once every few months and his period of stay in Surat varies from less than 14 days upto 20 days. When he is not in Surat, he gives out the flat on rent to people from South Africa who go to Surat for holiday or medical treatment. When he purchased the flat he made intention that due to it being in the area where his ancestors used to live, this will also be his house.

1. Will Surat become his وطن اصلي while Ispingo Beach remains his وطن اصلي? Thus he will have 2 وطن اصلي and he will never be a musafir when he goes to Surat.

2. Can he read full Salaah in Surat if he is only staying there for 10 days in that particular journey, because he has an intention to return to Surat for another week or two after three months and this is the home town of his ancestors (including grandparents).