#s(tz
   (#s(span #s(*date 1957 1 29 0 0 0 0) 10800 0 1957)
    #s(span -inf.0 0 0 -inf.0))
   #s(*zone-span 10800 () SYOT)
   (#s(span #s(*date 1957 1 29 0 0 0 0) 10800 0 1957)
    #s(span -inf.0 0 0 -inf.0)))