The months of Rajab, Dhū al-Qa‘dah, Dhu al-Ḥijjah, and Muḥarram are considered sacred. If no sighting is made, a 30th day is added to the current month, which is then followed by the first day of the subsequent month. If the Crescent Moon is visible shortly after sunset on the evening of day 29, the following day is the first day of the new month. The Islamic calendar has 12 months with 29 or 30 days. Months in the Islamic Calendar Month Names Because the time of the moonset at a location depends on its longitude, a new month and key religious rituals like the Ramadan fast may begin a day earlier in, for example, West African Muslim countries than in Indonesia or Malaysia. Some countries and Muslim communities now use modified versions of the traditional calendar that are designed to make the timing of Islamic months and observances easier to predict.Ī new month may also begin on different days in different countries.
This is why the dates for Muslim holidays may change at short notice. When this happens, the month may be extended by a day, delaying both the beginning of the new month and the events associated with it. Clouds and other adverse atmospheric conditions can obscure an otherwise visible Crescent Moon. This dependence on astronomical observations makes it difficult to predict the length of Islamic months. The traditional version of the Islamic calendar requires an authorized person or committee to make an actual sighting of the Crescent Moon to determine the length of each month. How accurate are different calendar systems? Difficult to Predict An Islamic year consistently falls about 11 days short of the solar year.įor that reason, the Islamic calendar cannot be used for agriculture or other activities traditionally linked to the seasons, and most Muslim countries officially use the Gregorian calendar as their civil calendar alongside the Hijri system. Unlike other calendar systems that use leap days or leap months to synchronize the calendar with the solar year, the Islamic calendar is completely detached from astronomical seasons, which are marked by the equinoxes and solstices. 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.
#Islamic calendar year full#
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)Ī New Moon - and Islamic month - is born.
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