It is the MarketPrcingTimes fields. Since these are Forex 24H trading markets, we've been using a shortcut internally and that is probably what is causing you confusion.
DayofWeek 0 is Sunday and DayofWeek 5 is Friday. Since we know that FX markets open on Sunday and close on Friday, we just take the current week's Sunday and Friday dates. The actual Date returned in the field is just today's date and close time of 22:00 hours. We're ignoring the date and appending the 22:00 hours close/open times to the Sunday Start and Friday End dates to get each weeks open/close.
Kind Regards, PM