A new month may also begin on different days in different countries.
Because the time of 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.
As a young man, Zainool Mohammed, 67, of Chanka Trace in El Socorro was influenced to learn about Hinduism.
Born to Sonny Mohammed and Samdai Babwah, Zainool Mohammed and his siblings followed in the footsteps of his mother who was a Hindu.
This dependence on astronomical observations makes it difficult to predict the length of Islamic months.