About all such
circumstances, the Sharī'ah is silent and there is a need to do ijtihād. Muslims
who are residing in such places should be told that this is something they must
decide for themselves, whether individually or collectively.
A number of options can be
adopted. For example, the time table of prayers and fasting of the nearest place
can be adopted where the difference between dawn and dusk is not too pronounced.
Another option is to adjust these timings according to the general routine of
sleeping, getting up and going to work. Similarly, other courses can be taken.