Qasar Salaah and Full Salaah

Will a person who has two houses in different countries perform full salaah or qasar salaah?

Q: I lived in South africa for many years, then for some reason I moved to another country with my whole family. However, I still have my house in South Africa and I have the intention to come back and live in this house after a few years.

My question is that if I come to my house in South Africa for 3 days just to see if everything is alright, will I be a musaafir or not?

How should a Musaafir calculate if he has to perform full salaah or qasr salaah?

Q: How can I calculate 15 days during a journey in order to know whether I need to perform qasar Salaah or full salaah. Suppose I reach a destination on 1st Dec 05:30 pm and plan to stay till 15th Dec 05:30 am.

Do I need to to take into account till 15th Dec 5:30 pm (360 hrs) as it is less than 360 I should offer Qasr even though it is 15th day ?

Musaafirs intention changing before 15 days

Q:

1. If a person intends to stay for 15 days and perform full salah but leaves on the 14th day to a different city which is 10 miles away from the first city for 3 days and comes back to stay again in the same city for more than 10 days. Should be perform qasar salaah or full salaah in all the cities?

2. If a person intends to stay for 14 days in one city and performs qasar salaah but his stay extends by a day or two and then he leaves to a different city which is 10 miles away from the first city for 3 days and comes back to stay again in the same city for more than 10 days. Should he perform qasar salaah or full salaah in all the cities?

Qasr salaah

Q: I am staying in a different city as I am working there but I want to know whether I will offer qasr salah if I go to below cities for less than 15 days

1. City A where I was born and don't reside now but I have a home which I gave to rent

2. City B, I have flat there but I don't reside and go once in a month

3.City C, my in laws home.

What should my wife offer here Qasr or full?

Also during Haj we stayed in Makkah for 14 days and on 15th day we left to Mina before Fajr. I offered Qasr Salah but when I came back few mufti's told you were muqeem. I told them once you reach destination from that time you should calculate 15 days. But they mentioned we need to calculate from our home and also even if we stay for one hour of a day we should count it as one full day. Is this correct? But I told them how you can assume one hour as one full day. Is my understanding correct?

Performing qasr salaah in Makkah

Q: We travelled from India on 4th Aug 4pm and reached our hotel in Makkah on 5th 00:30. We calculated our stay as 14 days (5 to 18) and we had intention that on 18th night or 19th morning we will leave for Mina. We left for Mina 19th morning 03:00am. We came back to Makkah on 23rd evening and stayed till 4th Sep. We offered qasar all in Makkah and during haj and then after coming from Haj as our stay at Makkah was not 15 days before leaving Mina and even after coming back from Haj it was not 15 days. Is it correct?

Few people calculate Mina, Arafat, Muzdalifa stay as in Makkah only, so as per them it is 30 days in Makkah and we should offer full salah. Is it correct?