Adding an additional time zone to the calendar for Buenos Aires and Salvador results in incorrect times being displayed.
Additional time zones added to the calendar display incorrectly.
Diagnosing the problem
Add an additional time zone ( File > Preferences > Calendar & To Do > Regional Settings) and set it for either Salvador (GMT-3) or Buenos Aires (GMT -3). Look at your calendar or day-at-a-glance and notice that the time displayed is GMT +3 instead of GMT -3.
Resolving the problem
This has been identified as a product defect under APAR LO71957. There are no known workarounds at this time.