#s(tz
   (#s(span #s(*date 1901 1 1 0 0 0 37972) 39600 0 1901)
    #s(span -inf.0 37972 0 -inf.0))
   #s(*zone-span 39600 () PONT)
   (#s(span #s(*date 1901 1 1 0 0 0 37972) 39600 0 1901)
    #s(span -inf.0 37972 0 -inf.0)))