This article contains information regarding a rocket or spacecraft that अभिव्यक्ति त्रुटि: अज्ञात विराम चिन्ह चरित्र "२"।.
Details may change as the countdown and ascent progress. Launch details: United Launch Alliance used a Delta IV-M+(4,2) to launch NROL-27, a Satellite Data System communications satellite for the US National Reconnaissance Office. Launch occurred from SLC-37B at Cape Canaveral. • Live countdown clock • Webcast
Launch was scheduled for मार्च 11, 2011 at 23:38 UTC (6:38 pm EST). See 2011 in spaceflight and the Spaceflight Portal for further details.