Looks like a bug. Tried a full reset and it is still there, all the time.
Right now the only way to prevent this, and preserving the battery is to disable location service for time zone.
Am I the only one ?
Have been experiencing severe battery drain on a new iPad. It seems that "Setting Time Zone" was constantly triggering Location Services. Have now disabled it and will see what that does. Not exactly sure what I'm giving up by disabling it. Found this thread while searching for info on it.