#s(tz
   (#s(span #s(*date 1960 1 1 0 0 0 17640) 18000 0 1960 "MMT")
    #s(span #s(*date 1880 1 1 0 0 0 17640) 17640 0 1880 "LMT")
    #s(span -inf.0 17640 0 -inf.0 "LMT"))
   #s(*zone-span 18000 () "MVT")
   (#s(span #s(*date 1880 1 1 0 0 0 17640) 17640 0 1880 "LMT")
    #s(span -inf.0 17640 0 -inf.0 "LMT")))