The Waxing Crescent Moon is the Moon phase which starts right after a New Moon. A new month can only begin after a Waxing Crescent Moon is observed shortly after sunset. The timing of the months in the Islamic calendar is based on astronomical observation. This Moon cycle encompasses all the phases of the Moon. Each month lasts for a full lunation, which is the time span from one New Moon to the next. The Islamic calendar is a lunar calendar whose time reckoning is tied to the Moon phases.
The Hijri calendar is not to be confused with the Solar Hijri calendar used in Iran and Afghanistan. Business Date to Date (exclude holidays).
