To schedule an event with a start time and end time being in different time zones (for example, a flight across time zones), simply toggle on the 'Time Zone' option via Ribbon, or via menu Message > Time Zone: To show the second time zone, go to Outlook > Preferences > Calendar, or by right-clicking the grid to see the second time zone options : You can new add a second time zone on the calendar grid so you can easily refer. Enabling second time zone in Calendar grid requires an Office 365 subscription. These features are now available to Insider Fast starting from version 16.11(180214 ). We're now shipping two of our most-requested calendar features: display second time zone on Calendar grid, and allow setting of start/end time zones in events. Outlook for Mac is now more powerful for managing your time across different time zones.