Today, March 9th, is a big day for certain participants in this year’s South by Southwest (SXSW) located in Austin, Texas. Health 2.0 and AT&T have teamed up to host SXSW’s official Mobile App Hackathon. While the title may be a bit misleading, the goal of this contest is to challenge developers, UI/UX designers and researchers to build mobile health applications–all within a period of 24 hours. The contest is being held in the Austin Convention Center.