I use the [Date Module](https://drupal.org/project/date). My contenttype `event` dates are stored like

```
field_date['de'][0]['value'] = 2011-12-09T10:40:00 (String, 19 characters )
field_date['de'][0]['value2'] 2011-12-09T13:10:00 (String, 19 characters )
field_date['de'][0]['timezone'] Europe/Berlin (String, 13 characters )
field_date['de'][0]['timezone_db'] UTC (String, 3 characters )
field_date['de'][0]['date_type'] (String, 4 characters ) date | (Callback) date();

```

How to apply my timezones to the values? When I edit the date on my `field_date` and also when my dates are displayed, everything is fine. But I have to work with the raw DB values and need to apply the timezone. Doing it *by hand* with php +1h should work, but then it's summertime again....