Clocks changed in Chile over the past weekend. Windows has switched to the new time. In Thunderbird, if I run "Date()", the correct time is shown. However the Calendar's red line shows the old time. In Events, times are shifted by an hour reflecting the old time. When I add new events, if not done locally, they are shifted by an hour. Hence my work calendar has a mix of events with accurate local times, and old times. Under Settings > Calendar, the timezone America/Santiago is shown. Is this a known issue? Is there any solution?