5 Claymill Rd, Leicester LE4 9JJ
Mob: 07707 753378
info@masjidmuhammad.uk
The Islamic calendar is based on the moon, so it is a lunar calendar. Each month is called a lunar month which is the duration between successive new moons which is the time it takes the moon to complete on orbit around the earth.
A lunar month has a mean period of 29.53059 days, or 29 days, 12 hours and 44 minutes, but the true length varies throughout the year.
Each new Islamic month begins with the sighting of the new moon. Hence some months, it will be sighted after 29 days. If the new moon is not sighted after 29 days, then the month will complete 30 days.