Ramadhan, Eid and Moon-sighting

Re: Ramadhan, Eid and Moon-sighting

 As far as I know, for areas where sunset never happens for days ... then for people living there, they should determine their prayer times using calculation or follow prayer times approximately in line with area closes to them where normal day cycle happens and prayer times can be determined. They can use same principle for determining ‘start of lunar months’ (‘Start of Ramadhan’ and ‘Eid days’)