FX Opening Hours

So with Fx opening hours, the markets are open 24/5. But what time zone (if any) are the opening times dictated by?

The opening time for the week comes from the start of the Japanese/Australasian business day. The end of day prices are normally from the end of the New York business day. They’re not technically close prices as forex trading continues 24hrs a day until the NY business day ends each Friday evening local time.