alarm

alert

android

announcer

apollo

blast

british

chronometer

count

countdown

delay

down

droid

drop

echo

end

expire

fi

final

houston

launch

lift

missile

new

nightclub

nye

off

party

pop

preparation

program

repetition

robot

rocket

sci

sci fi

science

sequence

ship

shuttle

space

spaceship

start

stopwatch

tik

time

tok

warn

year