6 Jun
2010
6 Jun
'10
9:10 p.m.
That's been the case even earlier as well. Listen to any of the countdowns for the Apollo lunar missions. The Saturn V's engines would ignite at about T-9 and take a few seconds to produce full thrust before lift-off at T = 0.
I remember the announcer saying something to the effect of, "T minus 9, ignition sequence has started."