Around that time Google changed their Calendar App behavior to display events in the user-specified settings time zone (not, I think, by IP address location assignment).
The problem is, they don't display the time zone information in the user interface. The only place to set time-zone is in the Settings, and then you have to remember to change it back as you travel.
They need to change their display from
Nov 30 – Dec 6, 2008to
Nov 30 – Dec 6, 2008 Central Timewhere a click on "central time" would allow time zone to be changed. When appointment details are shown the applicable time zone should be included.
It's disturbing that Google implemented the time zone behavior changes without making these very obvious UI changes.