The day of Eid falls on the first day of the month of Shawwal. The date for the start of any lunar Hijri month varies based on the observation of new moon by local Muslim authorities, so the exact day of celebration varies by the location of place. At some places, people observe a joyous three-day celebration of Eid-Ul-Fitr.
On the day of Eid-Ul-Fitr, Muslims gather early in the morning either in outdoor locations or mosques to perform the Eid prayer. Often, this consists of a sermon by a religious leader followed by a short congregational prayer to begin the festivities by embracing each other and wishing "Eid Mubarak".
Thus, Eid-Ul-Fitr is a day of great merriment and thanksgiving. Muslims celebrate by visiting friends and extended family, preparing sweet delicacies, wearing new clothes, giving each other gifts and putting up decorations in their homes.