RTLT definitions

Rtlt

1) Elapsed time 2) Round-trip light time
Found on https://www.crosswordclues.com/clue/rtlt

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RTLT

Round-Trip Light Time.
Found on http://www.braeunig.us/space/glossary.htm

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RTLT

Round-Trip Light Time, elapsed time roughly equal to 2 x OWLT.
Found on http://www.encyclo.co.uk/visitor-contributions.php

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