#s(tz
   (#s(span -inf.0 18000 0 -inf.0 "GMT-5"))
   #s(*zone-span 18000 () "GMT-5")
   (#s(span #s(*date 2039 12 1 0 0 0 18000) 18000 0 2039 "GMT-5")
    #s(span -inf.0 18000 0 -inf.0 "GMT-5")))