Matches in DBpedia 2015-10 for { ?s ?p "Launch of a space shuttle mission is governed by a countdown. 2 clocks are maintained, the unofficial, but sometimes mentioned, L (launch) clock represents the time remaining before the scheduled launch in real time and the more often referred to T (test) clock includes several built-in holds where additional verifications are made. Built-in holds may be extended if mission parameters allow for additional checks or to correct issues."@en }
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- Space_shuttle_launch_countdown comment "Launch of a space shuttle mission is governed by a countdown. 2 clocks are maintained, the unofficial, but sometimes mentioned, L (launch) clock represents the time remaining before the scheduled launch in real time and the more often referred to T (test) clock includes several built-in holds where additional verifications are made. Built-in holds may be extended if mission parameters allow for additional checks or to correct issues.".