Garmin 910 swim mode date issue.

Going over my logs today I just noticed that my 910xt has a problem when doing pool swims.  The date is off by a day.

Has anyone see this on their units?   A search on the net shows nothing but I can't be the only one.

The one external factor is that I bounce between california and phoenix and so am in a different timezone but I'm seeing 24+ hour time errors.

thx,

bob