album.timestamp = gdata.photos.Timestamp(text='%d000' % time.mktime((2010, 
    2, 3, 12, 0, 0, -1, -1, -1)))
updated_album = gd_client.Put(album, album.GetEditLink().href, converter=
    gdata.photos.AlbumEntryFromString)
Not able to change a date of my Picasa Web Albums album via Python API