One Ummat One Eid, Ramadan And One Laylati Alqadr
Brother Munnoo, there are plenty to challenge those calculation, but it is not possible for all. Others rely on few. Since Quran is for all times, Allah could only state the basic rule that Arabs of that time could follow too. People followed whatever science they knew at that time. Length of shadow, phases of moon, etc. Now we can follow more advanced science as long as it meets the the requirements Allah stated. The requirement is not “seeing” white thread of light, but the white thread of light “being” there. If seeing is required, not everyone can see every day. How did people determine start of the day if it was cloudy?
It was just to explain the issue by giving example of Australia. The case I made above is that as soon as the first moon is sighted anywhere in the world, that witness should be enough for all Muslims living in any part of the world. That is, as soon as they reach Maghrib (sunset) in their area they should consider moon sighted based on moon sighting witness given earlier in other part of the world.