[ColinWright]

Just by observing it, when the machine clock clicked to 14:20 (UK time) the second hand snapped to the vertical and the minute hand snapped to the 4 (the 20 minute mark).

Does that answer your question? I don't know what I can do that you couldn't do for yourself, so maybe I'm not understanding your question.

[throwaway744678]

I believe GP's question was: does the hand get released at 14:20 or 100ms before 14:20 to have it reach its position at exactly the right time, accounting for the animation delay.

[microjim]

Yes!