Yes, it is getting late.
4 seconds sound clip from the The Time Machine (1960) movie soundboard.
You can hear this line at 01:37:20 in the Blu-ray version of the movie.
Quote context
[...]
- David, there's the flower Weena gave me.
- You're always interested in botany. Try to match that with any species known today!
- You look exhausted, George. You really should get some rest.
- Good night, George. It's grand having you back.
[...]