The 22nd was a Saturday, which has never been chart day. I think that's meant to be 'week ending 22nd' in most sources, which makes sense when the new chart is drawn on the Sunday (23rd in that case) but none at all when the chart actually was drawn up on Tuesdays. I have a pre-Sunday copy of Guinness Hit Singles which gives all the operative dates as Tuesdays, and I even have tape recordings of most of the 1986 new charts. (Yes, that was the year I was Deeply Obsessive with music.)