Nineteen-Day Fast to be the one foretold by the Báb, accepted the fast, but altered many of its details and regulations. The Bahá'í fast resembles fasting practices of several other religions. Lent is a period of fasting for Christians, Yom Kippur and many other holidays for Jews, and the fast of Ramadan is practiced by Muslims. The Bahá'í fasting most resembles the fast of Ramadan, except that the period of fasting is defined as a fixed Bahá'í month, whereas Muslims fast during a lunar month, whose specific Gregorian dates vary from year to year. Bahá'u'lláh established the guidelines of the fast in
Fast-a-Thon end of the fasting day. The University of Tennessee Muslim Student Association held the first Fast-a-Thon in 2001 after the September 11, 2001 attacks and founded a national event that included students at over 230 colleges and universities in 2006. The event also is held to help dispel misconceptions about Islam and Muslims. An event at the University of Michigan has been held annually for over a decade. Other establishments supporting this event are the University of Florida, University of Washington, and the University of Waterloo. Fast-a-Thon is now an annual event held during Ramadan. If the month of Ramadan