Mudman world time awry

Hi.
Purchased my first ever g shock on the flea bay last week. A NATO green mudman. It has a weird issue with its world time. As we have family in Hong Kong I've set it to +7 hours but when cycling through to it its giving 13 hours behind? Does it with dst on or off. My local uk time is set correctly. Any ideas?

Which model Mark? Also is the DST setting correct for the UK time zone or did you move the time zone to adjust?

sent with aloha

Hi, it's a 3031 g9000.
Ok it's currently 7:15 here. I just turned dst off and set the time to 6:15 and utc to +7 for HK. Switch to world time and watch is telling me its 1715hrs yesterday in HK! Does exactly the same with dst switched on.

What time zone is your G set to? And is DST on or off?

sent with aloha