I live in Moscow. And use timezone Europe/Moscow. When I sync owncloud to android over davdroid - it’s all OK! But if I sync android to owncloud - event will make with Moscow time plus one hour. I tried with other app - all ok.
Thank you for pointing out the obvious! How embarrassing…
Now it is my time to confirm (it was quite long to receive the oreo update). Problem is definitely solved in Android 8.0.
ok. It works.