#s(tz
   (#s(span #s(*date 1969 2 1 0 0 0 0) 25200 0 1969)
    #s(span #s(*date 1964 11 1 0 0 0 25200) 0 0 1964)
    #s(span #s(*date 1957 1 13 0 0 0 0) 25200 0 1957)
    #s(span -inf.0 0 0 -inf.0))
   #s(*zone-span 25200 () DAVT)
   (#s(span #s(*date 1957 1 13 0 0 0 0) 25200 0 1957)
    #s(span -inf.0 0 0 -inf.0)))