I have a question regarding prayer timetable for muslims . Let say , the time for Asar is 4.30pm . Based on islamic-rules, Is it possible for we to take the prayer time to be anywhere between 4.25pm or 4.35pm ? Or one must take the 4.30pm strictly ? Please kindly answer my question . Thank you and that's all from me .
It really depends on how the timetable was compiled. Traditionally, prayer times were based on the position of the sun, not a particular time on a clock. Prayer timetables, on the other hand, are often compiled for convenience rather than astronomical accuracy.
The start time for the asr prayer, for example, is based on the length of an object's shadow: The shadow must be equal to the length of the object (or twice the length of the object by some schools) plus the length of the mid-day shadow, and the asr prayer can be prayed any time from then until sunset.
So it's possible that your asr time would be, for example, 4:00pm until 6:00pm, and the timetable just sets 4:30pm because it's convenient (maybe that's when most of your community normally gets off work). However, it could also be that your asr time is 4:30pm until 7:00pm, and the timetable is exactly on the nose; praying before the recorded time in that case would be ill-advised.
Giving a general rule in this case is impossible; you'd be better off asking at a local masjid where someone might actually know how the timetable was compiled, or checking the position of the sun manually. However, the general rule of "When you hear the adhan, go to prayer" would still apply, whether it's called according to the printed timetable or not.