PlanetKDE shows the time in UTC. It should ideally show it in the local time of the viewer.
You're right. ideally, it should give the local browser time. The problem is that while scraping off data from blogs, the Python script that works on the backend gets the time off the blog and converts it to a time common to all (UTC). This is so because the rendered template is static and same for everyone. I'll try solving this through JavaScript if possible.
Thank you for the bug report. As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists. If this bug is no longer persisting or relevant please change the status to resolved.