- Excuse me, Herr Ebbing.
- Yes, doctor?
- 5:21, to be exact.

4 seconds sound clip from the All Through the Night (1942) movie soundboard.

You can hear this line at 01:31:07.732 in the Blu-ray version of the movie.

Quote context

[...]

- Now, the vessel will sail at 4:27. It will proceed from the Brooklyn Navy yard, at a speed of 4 knots, to a point in the narrows opposite fort Henry.

- What vessel is he talking about?

- Quiet.

- At this point, the speed increases from 4 to 9 knots.

- And according to our plan, the vessel will reach the minefield at approximately 5:15.

- Excuse me, Herr Ebbing.

- Yes, doctor?

- 5:21, to be exact.

- Based on the coast guard tide reports, it is a mathematical certainty that, barring unforeseen events, we can hardly be a second off.

- Thank you, doctor.

- So the vessel will reach the minefield at 5:21 exactly.

- Steindorff, check the reports. I'll be back in a minute.

[...]