Hyderabad: The holy month of Ramadan will begin on Thursday, May 17, it was announced today. The announcement was made by Ruet-e-Hilal Committee on Thursday evening.

Although Ramadan is always on the same day of the Islamic calendar, the date on the Gregorian calendar varies from year to year, since the Gregorian calendar is a solar calendar and the Islamic calendar is a lunar calendar. This difference means Ramadan moves ahead in the Gregorian calendar by 10-11 days every year.