Hello Howard, I have been reading your book. So far I was able to digest 160 pages. It is all very clear and well written. I have one question in regards to "Seasonality Systems" testing on page 152 and 153 (Trading Day of the Month) AFL defines "Daynumber" as 8 bars before and after DOI day. If we have 22 trading days on average in any given month, why do you only test for 16 or 17 if one includes DOI day? Is there a reason why you don't use Minus11 instead of Minus8?
Kind Regards Richard
