I been trying to get the clock setting correct on my duel AFS4500 screens. They are synced and have the correct day and time UTC but will not hold +13 hours UTC to give me the correct local time. I press the save button each time I try to set the clock but on the next start up it has dropped the + 13 hours and is back at 0 giving UTC and local as the same.

What are I missing when setting the clock.