#s(tz
   (#s(span -inf.0 -21600 0 -inf.0 "GMT+6"))
   #s(*zone-span -21600 () "GMT+6")
   (#s(span #s(*date 2039 12 1 0 0 0 -21600) -21600 0 2039 "GMT+6")
    #s(span -inf.0 -21600 0 -inf.0 "GMT+6")))