#s(tz
   (#s(span #s(*date 1976 12 1 0 0 0 0) -10800 0 1976 "zzz")
    #s(span -inf.0 0 0 -inf.0 "zzz"))
   #s(*zone-span -10800 () "ROTT")
   (#s(span #s(*date 1976 12 1 0 0 0 0) -10800 0 1976 "zzz")
    #s(span -inf.0 0 0 -inf.0 "zzz")))