Quote from smilingsynic:
Mental stops are fine if one has the discipline to use them.
Apparently, B1S2 saw that the market action around 1343 was not indicative of a continued rise, so he overrode the stop.
Quote from Btruck:
Here's the link for the CME holiday calender:
http://cmegroup.com/tools-information/holiday-calendar/index.html?