The idea is included in SDL Tridion Sites 9.5.
We have switched to using UTC times only on the server side for CM (database, server logic, TOM.NET and CoreService APIs). Experience Space, Content Manager Explorer and Experience Manager will convert all date/time values to user local timezone on the fly. This change will be applied to all date/time values exposed in API, such as modification date, scheduled publish date, times when publish stansaction changed its state (e.g. from Rendering to Transporting), when workflow activity was started etc.