National Best Friend Day is an unofficial holiday that is celebrated annually on the 8th of June. 

It is a day to celebrate friendship and spend some time with your best friend, showing them how much you appreciate them being in your life. Life wouldn’t be the same without best friends

While the holiday seems to have lost popularity through the years, it has seen a recent upsurge in engagement since the advent of social media. Now, on June 8 every year, people rush to post fun photographs of themselves with their most trusted friends.