Yes what TIME ZONE and how does it relate to our time zones
Pretty sure the time zone is UTC/GMT.
Could be the date and time that someone at the State Department changed the page. Maybe it’s a rogue employee of the DOS. Maybe they just got ahead of themselves in changing the page. No way to know right now.
GMT=Greenwich Mean Time, which at this time of the year is six hours ahead of Central Time. (It's equivalent to London's time zone.)