I live in the Pacific time zone and often travel to the Eastern time zone.  I would like to have one calendar set for the Pacific time zone and the other calendar set for the Eastern time zone.  I sync my outlook.com calendar with a few computers with Outlook 365 installed (including a Surface Pro for mobility).  I also use the calendar function on a few iPhones and iPads that I would like to be able to read the appointments and events in the timezone of the particular calendar.