Hi @Morgan Borck ,
According to my understanding, you want to display the three time zones of PST, CST and EST in the calendar of Outlook, right? Regarding the problem of the wrong time offset, I found the documentation Daylight Saving Time Calendar Display Bugs, which explains why it is, and the current workaround is that you need to switch the view to Work Week. (Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)
My test results are shown below:
Also, I noticed that the CST you added in the Outlook client seems to be inconsistent with the one in the browser, you should add Central Time (US & Canada) in Outlook.
Please let us know if there has such update when you tried these steps.
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