Two year anniversary of the last square root day Harris L Miscellaneous Rants April 4, 2018 1 Minute The last square root day was 4-4-16. The next one will be 5-5-25. There are nine in each century. Now you know. Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook More Email a link to a friend (Opens in new window) Email Like Loading... Published by Harris L View all posts by Harris L Published April 4, 2018