All right, sunrise should be in about 22 minutes.

3 seconds sound clip from the Back to the Future Part II movie soundboard.

You can hear this line at 01:02:44.478 in the Blu-ray version of the movie.

Quote context

[...]

- Don't worry, Marty. Assuming we succeed in our mission, this alternate 1985 will be changed back into the real 1985, instantaneously transforming around Jennifer and Einie.

- Jennifer and Einie will be fine, and they will have absolutely no memory of this horrible place.

- Doc. What if we don't succeed?

- We must succeed.

- Oh, this is heavy, Doc. I mean, it's like I was just here yesterday.

- You were here yesterday, Marty. You were. Amazing, isn't it?

- All right, sunrise should be in about 22 minutes.

- You go into town. Track down Young Biff and tail him. Sometime today, Old Biff will show up to give Young Biff the almanac.

- Above all, you must not interfere with that event.

- We must let Old Biff believe he's succeeded, so that he'll leave 1955, and bring the DeLorean back to the future.

- Right.

- Once Old Biff is gone, grab the almanac any way that you can.

[...]