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
Andersen's fruit-eating bat Andersen's fruit-eating bat Andersen's fruit-eating bat ("Dermanura anderseni") is a bat species from South America. It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, and Peru. It was described as a new species in 1916 by American zoologist Wilfred Hudson Osgood. The holotype had been collected in 1915 by "R. H. Becker" (likely Osgood's assistant Robert Becker) in Porto Velho, Brazil. The eponym for the species name ""anderseni"" is Danish mammalogist Knud Andersen. It is a relatively small species of bat, with a forearm length of . Its fur is dark brown on both its dorsal and ventral sides.