According to and, World Friendship Day or International Day of Friendship 2023 is celebrated on July 30, 2023. However, also mentions that Friendship Day for the year 2023 is celebrated on Sunday, August 6th. It is an international holiday celebrating friendship and occurs on different dates in various countries. In the United States, it is observed on the first Sunday of August. Therefore, based on the search results, Friendship Day 2023 is celebrated on Sunday, August 6th, 2023.