News Amazon Prime Day 2021 is June 21 and 22—here’s everything you need to know June 2, 2021June 2, 2021Jon Winkler, Nishka Dhawan and Nicole Briese, ReviewedComments Off on Amazon Prime Day 2021 is June 21 and 22—here’s everything you need to know Amazon Prime Day 2021 is on June 21 and 22. but you don't have to wait to save—shop the best deals the site has to offer ahead of the retail giant's busiest day of the year.