In KDE 4 I remember there was an option to make KDE treat Monday as the first day in a week. Where is the equivalent option in KDE 5?

Christoph Feck wrote at https://mail.kde.org/pipermail/plasma-d ... 62830.html:

See bug 340982.

KF5 applications do not use the customizable KLocale class, but use what
Qt offers (QLocale), which we hoped would soon get support for
customizations, but progress is slow, so no code has surfaced. Help
surely is appreciated to implement the current vision described at
https://wiki.qt.io/Locale_Support_in_Qt_5

Earlier: How to set Monday as the first day of calendar widget? - viewtopic.php?f=66&t=131758

martinpola wrote:In KDE 4 I remember there was an option to make KDE treat Monday as the first day in a week. Where is the equivalent option in KDE 5?

In Kubuntu regional settings can be altered and although I prefer my week to start on Sunday to match my work calendar, whenever modifying the date, time, etc., I find that it always forces Monday instead of Sunday. I've tried all combinations in the customization, but none of them work as they should...the bug report for lack of code for customization is rearing its ugly head.

I have resigned to leaving it at default which means my short date is sorted wrong, but the time is changed to 24h and calendar starts on Sunday. Annoying but such is the case for open source software.