I uploaded it just before 10pm EST on December 6th. A few other people who posted even a few hours before me also show up on the website as being posted on the 7th. Not sure why maybe it rounds up. Interestingly if you look at it on the app it shows the upload date as the 6th. Go figure. Point is I made very sure to submit on time and I totally understand the concern as it would be completely unfair and there were late posts that came in the days that followed.