That looks like the tweet date.
https://www.facebook.com/events/1814324325289736/
SaveSCOTUS Rally
Thursday, June 28 at 10 AM - 12 PM EDT
Hosted by Why Courts Matter and 9 others
Why Courts Matter
Stand Up America
Demand Justice
NARAL Pro-Choice America
Center For American Progress Action Fund
Alliance for Justice
The Leadership Conference on Civil and Human Rights
People For the American Way
Generation Progress
MoveOn