Time not syncing with the phone

So, i'm In Mexico City and looks like they don't switch anymore between legal/solar time but Garmin doesn't know it so the time on the watch is wrong since yesterday.

I tried to sync the watch with the phone but it's not working...the correct time appears for few seconds but after it goes back to the wrong one.

Am i doing something wrong?

I'm with the latest beta software(13.09), could that affect the functionality too?(was not sure where to post it but it doesn't look like something that can be affected by a beta software)

PGsBmLHb7aA