My [tag]ezCOMMENTS[/tag] plugin under test here has an argument to correct time zone difference in hours. This requires little tweaking when Daylight saving comes into play. Read more about daylight saving in Microsoft's site here. I have determined earlier in this post that I need an adjustment of '-5'. I just tested this by this comment I posted.
I found "1 hour ago" instead of "0.0" therefore '-5' has to be changed to '-4' in my plugin setting.
PS: this [tag]plugin[/tag] is now version 0.15, a minor flaw in displaying the text "be first to say something" is fixed when I have no comment or no trackback/pingback.