The date of First Day of Ramadan varies because it is based on the Islamic Hijri Calendar. The day is on day number 1 in the islamic month ramadan.
The Islamic Hijri Calendar is a lunar calendar, which means that the calendar depends on the lunar phases. This means that, in the next ten years, First Day of Ramadan varies between January 5 and December 15. In the table below you can see the date for First Day of Ramadan in the coming years in the western calendar (Gregorian calendar).
