#s(tz
   (#s(span -inf.0 -28800 0 -inf.0 "GMT+8"))
   #s(*zone-span -28800 () "GMT+8")
   (#s(span #s(*date 2039 12 1 0 0 0 -28800) -28800 0 2039 "GMT+8")
    #s(span -inf.0 -28800 0 -inf.0 "GMT+8")))