I just came home from a trip to South East Asia. This time (as every time I travel) I forgot to change time zones (as well as the daylight savings this time).

First I changed the daylight savings through Metadata -> Adjust Date and Time. 
Then I also changed the time zone through Metadata->Batch Change -> Adjust Time Zone.
Now all my pics had the correct time.
After synching all pics to my iPad I discovered that these changes weren’t showing when using iPhoto on my iPad.

How come the changes are visible in Aperture but still not visible through iPhoto on my iPad?
What have I missed here?