#s(tz
   (#s(span #s(*date 1956 11 1 0 0 0 0) 36000 0 1956)
    #s(span #s(*date 1952 1 14 0 0 0 36000) 0 0 1952)
    #s(span #s(*date 1947 1 1 0 0 0 0) 36000 0 1947)
    #s(span -inf.0 0 0 -inf.0))
   #s(*zone-span 36000 () DDUT)
   (#s(span #s(*date 1947 1 1 0 0 0 0) 36000 0 1947)
    #s(span -inf.0 0 0 -inf.0)))