Using classic Outlook for Windows in business environments
For all who are still stuck:
Instead of publishing the calendar from within Outlook, I chose Share Calendar (in Outlook), where I entered my Google email. An email got send to me. Don’t click on the big blue button. Instead, copy the link (very tiny at the bottom) that is similar to this https://outlook.office365.com/owa/calendar/…999999…/reachcalendar.ics
Drop this into add with URL in Google Calendar. Worked for me (while Google Calendar still states time zone as GMT+00:00)
Credit to Jan_Henning from: https://answers.microsoft.com/en-us/outlook_com/forum/all/outlook-calendar-displaying-wrong-time-zone-in/29a46169-f7a5-412b-a4c8-5547cead615b?page=2