How can I make AngularJS simply print the date without applying a time zone ?

I return from WEBapi a date like

2013-01-01T00:00:00

And I want

  {{msa.StartDate | date:'yyyy-MM'}} 

To be

2013-01

But because it wants to take my current time zone in consideration (US eastern) it is

2012-12

Is there a easy way to tell it DO NOT CARE ABOUT TIMEZONES? Or is there some other filter I can run the date through to ignore my time zone?