#s(tz
   (#s(span #s(*date 1972 6 1 0 0 0 14400) 10800 0 1972 "GST")
    #s(span #s(*date 1920 1 1 0 0 0 12368) 14400 0 1920 "LMT")
    #s(span -inf.0 12368 0 -inf.0 "LMT"))
   #s(*zone-span 10800 () "AST")
   (#s(span #s(*date 1920 1 1 0 0 0 12368) 14400 0 1920 "LMT")
    #s(span -inf.0 12368 0 -inf.0 "LMT")))