Donald Liebenberg
... that Donald Liebenberg experienced 74 minutes of totality aboard a Concorde during the solar eclipse of June 30, 1973?
... that <b id="mwBZs"><a href="./Donald_Liebenberg" id="mwBZw" rel="mw:WikiLink" title="Donald Liebenberg">Donald Liebenberg</a></b> experienced 74 minutes of <a href="./Solar_eclipse#Terminology_for_central_eclipse" id="mwBZ0" rel="mw:WikiLink" title="Solar eclipse">totality</a> aboard a <a href="./Concorde" id="mwBZ4" rel="mw:WikiLink" title="Concorde">Concorde</a> during the <a href="./Solar_eclipse_of_June_30,_1973" id="mwBZ8" rel="mw:WikiLink" title="Solar eclipse of June 30, 1973">solar eclipse of June 30, 1973</a>?