XF 2.2 Registration timezone auto detection for multiple cities in same timezone

[Mouth]

How does the registration form automatically detect the timezone on the client computer for automatically setting an appropriate timezone.

All registering users with a client pc timezone of UTC +8:00 Perth are being placed into the UTC +8:00 Beijing [...] timezone.

 

[Mouth]

How does the registration form automatically detect the timezone on the client computer for automatically setting an appropriate timezone.

All registering users with a client pc timezone of UTC +8:00 Perth are being placed into the UTC +8:00 Beijing [...] timezone.

Example from a user whom registered today ...