Kirk here. If you are in eye-shot of the castle after midnight, you might notice the difference.

--- start quote ---
The castle, located in Chuo Ward, Kumamoto, is usually lit up from sunset to midnight. Officials decided to extend the hours from dusk to dawn following the quake.
--- end ---

https://japannews.yomiuri.co.jp/features/japan-focus/20260919-349523/