Periodicity in the energy sector

this is uncanny. using a “money flow” technical indicator, past extremes in the recent past in 2008 for the energy sector have been:
May21st overbought
July 9th  oversold
Aug 29th overbought
Oct 16th  oversold
Dec 5th   overbought
 
sorry, december 5th hasn’t happened yet.  for that matter, November 5th hasn’t happened yet either.  How did I get december 5th?
 
May21-July 9th     49 days
July 9 - […]