https://www.cnet.com/news/amazon-prime-day-2018-will-bring-big-sales-on-july-16-according-to-leak/

Amazon's day (and a half) of deals may be less than a month away. According to a new leak, Amazon Prime Day starts July 16.

The date was shown in a reportedly leaked Prime Day promo banner on Amazon's UK site, and spotted by TechRadar. It seems like the banner was taken down sometime after.