Bug 515558

Summary: Day/Night time switch happens at the end of sunrise/sunset
Product: [Applications] systemsettings Reporter: Gurenko Alex <agurenko>
Component: kcm_nighttimeAssignee: Plasma Bugs List <plasma-bugs-null>
Status: CONFIRMED ---    
Severity: normal CC: vlad.zahorodnii, walter.von.entferndt
Priority: NOR    
Version First Reported In: 6.5.5   
Target Milestone: ---   
Platform: Other   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=515533
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Gurenko Alex 2026-02-05 16:38:37 UTC
SUMMARY

I absolutely love the Day/Night time switch and I've been waiting for it for a very long time, but after using it for a while, the fact that switch occurs at the end of the sunrise/sunset puts it in a wrong time. At least here in southern Germany at "Sunset starts at <time>" it's already dark. There is already another request for the offset here https://bugs.kde.org/show_bug.cgi?id=515533, which is also valid, but I still think that even in a current form the switch should occur on the start of the event and not at the end, because there is 35-40 minute difference there for me. Maybe give it a toggle (Start, End, middle point(?))

STEPS TO REPRODUCE
1. Set Day/Night cycle based on device location
2. Wait until official sunset time

OBSERVED RESULT

Nothing happens at the official sunset time, instead it happen at "Sunset ends at <time>"

EXPECTED RESULT

I strongly feels it should happen at the beginning of the event, unless it's different in other parts of the world, then it should be configurable.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora KDE 43
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1

ADDITIONAL INFORMATION
Comment 1 Walter von Entferndt 2026-02-07 14:20:19 UTC
merge request is pending on invent.kde.org (GitLab)