Re: Egypt plan to [cancel] DST during Ramadan and then to resume DST again.

By traditional definition, the Islamic month is based on the sighting of the first crescent of the moon, which depends on the observers, not a chronological or mathematical formula, and varies depending on the location of the observer, the weather, the time of day, and other factors. But not not all Islamic countries use the first sighting of the crescent Moon to signal the start of the month. In Saudi Arabia and Egypt the beginning of the month is fixed by the relative timing of sunset and moonset on the 29th day of each month. If the Moon sets before the Sun the next day is the 30th of the month. If the Sun sets before the Moon (by at least 10 minutes in Egypt) the next day is the first of the next month.