The most important festival in the Islamic calendar and falls in the month of Shawwal. After fasting for the month of Ramdan, the day when the fast is broken is known as Eid. The date for the start of any lunar Hijri month varies based on the observation of new moon by local religious authorities, so the exact day of celebration varies by locality. The significance of Eid-Special is essentially spiritual. This day, the Muslims thank Allah for having given them the will, the strength, and the endurance to observe fast and obey His commandment during the holy month of Ramadan. Muslim religious leaders of the early days of Islam always felt profound sorrow and void when Ramdan came to an end, as they felt that they were being deprived of the spiritual blessings which were associated with the month of fasting.