It appears the dates on the Powerchart are populating out of order? It's just the labels that are wrong if I use the X-Trace it shows teh correct date and time. Depending on the date range like if I change it to just 1 day time frame, then the dates appear correct. I've dragged the tags directly into a chart and they seem to populate fine.
It just looks like the dates are backwards to me 
what's your date format set to?
Does that chart have a date format override? Any chance the uppercase/lowercase format letters were scrambled?
use "d" in the formatting which means day of the week apparently causing it to show those weird numbers.