The best friend or bestie day in 2020 was celebrated on August 2nd, which is the first Sunday in August and is recognized as Friendship Day in many countries, including the USA. In general, National Best Friends Day is celebrated annually on June 8th, and Friendship Day is observed on the first Sunday of August each year. For 2020 specifically, the first Sunday of August fell on August 2nd for Friendship Day, and June 8th was the day for National Best Friends Day. So, in 2020:

• National Best Friends Day was June 8, 2020
• Friendship Day was August 2, 2020

Best Friends Day is mainly on June 8 every year, and Friendship Day is the first Sunday of August annually.