NASA Sets New Launch Window for Supersonic Vehicle Test

May 27, 2015 M15-082

The second flight test of NASA's Low-Density Supersonic Decelerator (LDSD) now will launch no earlier than 1:30 p.m. EDT (7:30 a.m. HST) Tuesday, June 2, from the U.S. Navy's Pacific Missile Range Facility (PMRF) on Kauai, Hawaii. NASA Television coverage will begin at 1 p.m. EDT (7 a.m. HST).
To accommodate prevailing weather conditions, mission managers moved the launch window one hour earlier to increase the probability of LDSD launching on time.
NASA's LDSD project is designed to investigate and test breakthrough technologies for landing future robotic and human Mars missions and safely returning large payloads to Earth. The test, performed over the Pacific Ocean, will simulate the supersonic entry and descent speeds at which the spacecraft would be traveling through the Martian atmosphere.

source: 
NASA (The National Aeronautics and Space Administration )