preferences – How to get Auto Dark Mode to work at sunset, not many hours later?

On Monterey 12.6.3 I have System Prefs > General > Appearance set to ‘Auto’. This works, changing Dark to Light mode and back again automatically.

But it does so some hours after sunset.

I confirm Date & Time settings have me in the correct time zone (GMT) and Closest City is where I live.

Is there any way to make it work at around sunset, as Apple says it will?