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
Ramadan Ramadan on crime: The length of the dawn to sunset time varies in different parts of the world according to summer or winter solstices of the sun. Most Muslims fast for 11–16 hours during Ramadan. However, in polar regions, the period between dawn and sunset may exceed 22 hours in summers. For example, in 2014, Muslims in Reykjavik, Iceland, and Trondheim, Norway, fasted almost 22 hours, while Muslims in Sydney, Australia, fasted for only about 11 hours. Muslims in areas where continuous night or day is observed during Ramadan follow the fasting hours in the nearest city where fasting is