#s(tz
   (#s(span #s(*date 1972 4 29 2 0 0 -25200) -21600 0 1972 "M~aT")
    #s(span #s(*date 1961 9 24 2 0 0 -21600) -25200 0 1961 "MST")
    #s(span #s(*date 1961 4 30 2 0 0 -25200) -25200 3600 1961 "MDT")
    #s(span #s(*date 1960 9 24 2 0 0 -21600) -25200 0 1960 "MST")
    #s(span #s(*date 1960 4 30 2 0 0 -25200) -25200 3600 1960 "MDT")
    #s(span #s(*date 1959 10 31 2 0 0 -21600) -25200 0 1959 "MST")
    #s(span #s(*date 1959 4 25 2 0 0 -25200) -25200 3600 1959 "MDT")
    #s(span #s(*date 1957 10 27 2 0 0 -21600) -25200 0 1957 "MST")
    #s(span #s(*date 1957 4 28 2 0 0 -25200) -25200 3600 1957 "MDT")
    #s(span #s(*date 1950 1 1 0 0 0 -25200) -25200 0 1950 "M~aT")
    #s(span #s(*date 1950 9 24 2 0 0 -21600) -25200 0 1950 "MST")
    #s(span #s(*date 1950 4 30 2 0 0 -25200) -25200 3600 1950 "MDT")
    #s(span #s(*date 1949 9 25 2 0 0 -21600) -25200 0 1949 "MST")
    #s(span #s(*date 1949 4 24 2 0 0 -25200) -25200 3600 1949 "MDT")
    #s(span #s(*date 1948 9 25 2 0 0 -21600) -25200 0 1948 "MST")
    #s(span #s(*date 1948 4 24 2 0 0 -25200) -25200 3600 1948 "MDT")
    #s(span #s(*date 1947 9 27 2 0 0 -21600) -25200 0 1947 "MST")
    #s(span #s(*date 1947 4 26 2 0 0 -25200) -25200 3600 1947 "MDT")
    #s(span #s(*date 1946 10 13 2 0 0 -21600) -25200 0 1946 "MST")
    #s(span #s(*date 1946 4 14 2 0 0 -25200) -25200 3600 1946 "MDT")
    #s(span #s(*date 1946 4 28 2 0 0 -25200) -25200 0 1946 "M~aT")
    #s(span #s(*date 1945 9 30 2 0 0 -21600) -25200 0 1945 "MST")
    #s(span #s(*date 1945 8 14 23 0 0 0) -25200 3600 1945 "MPT")
    #s(span #s(*date 1942 2 9 2 0 0 -25200) -25200 3600 1942 "MWT")
    #s(span #s(*date 1918 10 31 2 0 0 -21600) -25200 0 1918 "MST")
    #s(span #s(*date 1918 4 14 2 0 0 -25200) -25200 3600 1918 "MDT")
    #s(span #s(*date 1905 9 1 0 0 0 -25880) -25200 0 1905 "LMT")
    #s(span -inf.0 -25880 0 -inf.0 "LMT"))
   #s(*zone-span -21600 () "CST")
   (#s(span #s(*date 1905 9 1 0 0 0 -25880) -25200 0 1905 "LMT")
    #s(span -inf.0 -25880 0 -inf.0 "LMT")))