Microsoft recently enhanced the Time Zone feature in Outlook Online.
Working in a hybrid working environment or networking through social media platforms, the ability to display more time zones in my calendar view is good.
In fact, I could add over ten time zones in my settings. I didn't have to remember the UTC (Universal Time Coordinate. Who remembers PST, EST, JST, etc. I only know the ones in my region.)
I could tag them to know which country or location they represented.
To top it off, I could toggle to show and hide the ones that matter to me while in the Day, Week, and Work Week views. (Come closer in my whispering voice, "I didn't have to navigate to the Calendar Settings.")
Check out the 3-minute video highlighting these features.