Mark of distinction July 21st bug?

I didnt start playing the atomic heart event until yesterday, but i grinded it from day to night yet i didnt get any mission points for the july 21st mark of distinction before it expired at 4:30. is this a bug or do i just have to start playing the event on july 21st to get the july 21st mark of distinction. i had 0/20000 mission points on the mark of distinction which doesnt seem right. my battle log says i did play that day and i also got the july 23rd daily win crate for thsi event.