Ramadan is the ninth and most important month in the Islamic calendar in which Muslims fast from sunrise to sunset.
The holy month will begin on or around February 28, depending on when the new moon is sighted — which can differ in each country.
The commencement date can vary depending on the calculation method as the Islamic calendar follows the lunar cycle.
The Australian National Imams Council (ANIC) has determined that the sun will set in Sydney at 7.32pm on Friday with the new moon visible at 7.44pm.
That will mark the first night, with Ramadan commencing on Saturday.
"The method by which the Grand Mufti of Australia and the Australian Fatwa Council had determined the commencement of the month of Ramadan is based on the calculated birth of the moon before sunset, the duration of the moonset after sunset and the possibility of sighting the moon," ANIC said in a statement.
"This is a method that many prominent and reputable global scholars, councils and Muslim countries have adopted."
Muslims observe 29 to 30 days of Ramadan.
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Fasting begins each day from sunrise to sunset — about 5.20am to 7.35pm in Sydney.
The end of the month will be around March 29 or 30 and marked by Eid al-Fitr, also known as the festival of the breaking of the fast.
The day is full of celebration, festivities, prayer, food and friends and family.
Source: 9news.com.au