Astronaut John Glenn gives ready sign during Mercury-Atlas 6 pre-launch training activities.
NASA
<table class="messagebox plainlinks layouttemplate {{{lang}}}" lang="{{{lang}}}" dir="ltr" style="margin:2px 10%;width:auto;border:2px solid #48d;background:#fbfcff;color:#222;border-left-width:8px;border-collapse:collapse;"><tbody><tr><td class="mbox-image" style="padding-left:.9em"><img alt="Commons-emblem-notice.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/32px-Commons-emblem-notice.svg.png" decoding="async" width="32" height="32" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/48px-Commons-emblem-notice.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/64px-Commons-emblem-notice.svg.png 2x" data-file-width="48" data-file-height="48"></td><td class="mbox-text">This date is not correct:  The launch happened on 20 January 1962.</td></tr></tbody></table>1962-01-23
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