Throwback Thursday

Throwback Thursday is a trend among social media sites such as Instagram, Twitter and Facebook's wherein users post or repost older photographs (often from their childhood) with the hashtag #ThrowbackThursday or #TBT.

Sports Illustrated attributes the origin of the term to a sneaker-specific blog named Nice Kicks. According to SI, this blog began a practice of regular postings (on Thursdays) of photos of old basketball footwear in 2006, titling the series "Throwback Thursday".

Similar to Throwback Thursday, Flashback Friday was a popular hashtag several months before Throwback Thursday was. Although both hashtags are similar, what makes them different is the days in which one can post a nostalgic picture. Flashback Friday is a second chance for social media lovers to upload a photo if they have forgotten on Thursday, or even for people to upload more vintage photos that allows them to share their content as many times as they want. On Fridays, social media users should use the hashtag #flashbackfriday or #fbf to follow the trend.

Monday Motivation is a slogan redistributed on Twitter, Instagram and Facebook under the hashtag #MondayMotivation where users of the social media sites post positive messages on a Monday. Positive quotes and uplifting messages are included in this hashtag as well as many photographs. Monday was the chosen day for such hashtag as a result of the widely known Monday Blues phenomena. The hashtag also aims to inspire productivity for all, with users using this hashtag for motivating other users to get out of bed on a Monday morning.

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Wikipedia