everything that I have read about timestamp and datetime in mysql suggests that it is not possible to find out the timezone of a datetime - Field in mysql.
If that is true, isn't that a big advantage of timestamp - values compared to datetime - values?
For example if by mistake the default-time-zone is changed and there are stored some datetime-values with
now()
you will have a hard time to fix the wrong values. Whereas with timestamp you can just set the timezone you want to have and the database changes the entries automaticly because it stores them always in UTC.