NASA managers have retargeted space shuttle Endeavour's launch to no earlier
than Monday, May 16. After a meeting on Friday, they also extended the length
of Endeavour's STS-134 mission to the International Space Station from 14 to 16
days. If Endeavour launches on May 16, liftoff would be at 8:56 a.m. EDT.

http://www.nasa.gov/mission_pages/shuttle/main/rss_feed_above_snip_collection_
archive_1.html