Easily done ….
In Outlook open your calendar. Click either the “1 Day” or “5 Work Week” view.
Now right-click the blank gray area in the upper-lrft corner of the Calendar view and select the increment you want to see on the calendar.
This only works in the 1 and 5 day views.
You can also edit your time zones in your calendar options and add a Time Zone label. The area that you are to right-click will be the area where you time zone label shows.
You can also add an additional time zone to your Calendar time display.
btw … How’s the domain issue going?