From Apple’s Black Friday teaser page:

Friday can’t come soon enough.

Our one-day shopping event will be here before you know it. Come back this Friday to check everyone off your list.

Free two day shipping on all in-stock items ordered by 5p. No mention of time zone there. Fair to assume it’s 5p local time?

Check back Friday morning to see what’s on sale. I’m hoping for a discount on the new Apple Watch.