Qiblah

Q: A person made taharri for qibla and read salah, later when the salah time expired, he came to know it was the wrong qibla, does he repeat his salaah?

Q: How to offer prayer on a cruise (at sea) if the direction of the Qibla is unknown?

Q: A family moves into an apartment, they use a well known Qibla finding app to locate the Qibla direction and pray. Months later a neighbour points out that the direction is wrong and they must face the other direction. The difference is about 90 degrees apart. What happens to those Salaah that were prayed in the incorrect direction, are they valid or do they need to be repeated? 

Q: Our masjid was built in the 1980’s and the committee at that time put the carpet in line with the building although the qibla was at an angle so that more musalees could pray salaah. The qibla is out by approximately 23 degrees. The link bellow shoes the correct qibla in Blue line and the qible being used is in line with the centre ridge of the roof.

http://www.elahmad.com/maps/qibla-english.htm?latitude=53.565809&longit…

A mufti gave a fatwa some years after the masjid was built, that they could continue praying salaah in the current wrong direction to prevent controversy, but if the carpet is ever changed, then the correct qibla should be followed. Last month the current committee changed the carpet (knowing the fatwa given by the mufti to change the qibla direction if the carpet is changed) but kept the old incorrect qibla. Will salaah in the masjid with the wrong qibla be accepted? Does the committee need to move the carpet so that the correct qibla is achieved?

Q: People in London area have hired a hall for prayers. My question is: How important it's that they should be facing Qibla while praying? If knowingly they pray not facing the Qibla for reason of convenience and make other people to pray the same way, what will be your advice? Would their prayers/ namaz will be accepted?

Q: I have prayed the Zuhr prayer today. But realised only after Esha prayer that my qiblah direction was incorrect. Do I repeat the salaah?

Q: About 2 months ago when I prayed Dhuhr in school, one girl changed the direction of the prayer and I prayed with her even though iI had severe doubts about if it was the right direction. I then found out that it wasn't the right direction but I didn't repeat the prayer. Should I redo the prayer? And is it as if I didn't pray? I had forgotten about this incident, it recently came to my mind, what should I do?

Q: I have heard recently that some Fuqahaa have permitted  a certain amount of degrees leeway on either side when facing the qibla. Could you please elaborate on this?

Q: In the UK how many degrees should the qibla be worked out at?

Q: When working out qibla, sometimes it is hard to get it exact, how many degrees leeway are we allowed (hanafi)?