The first record of the Islamic unity week dates back to the time when
Seyyed Ali Khamenei was in
Sistan and Baluchestan. This Shia cleric/scholar (with the co-operation of some Sunni scholars) arranged a week to celebrate the unity between Shia and Sunni people. After
Iranian Revolution, Ayatollah
Ruhollah Khomeini proposed to name the interval between the two dates as Islamic unity week. Ayatollah
Montazeri suggested to ayatollah Khomeini to call the week as Islamic unity week in reaction to the Saudi Mufti's attacks on Sunnis and Shia. The two dates are the twelfth of Rabi Al Awwal, the first week of the third lunar month of the Islamic calendar, according to Sunnis, and the seventeenth of Rabi al Awwal, according to Shia. ==Events==