World Emoji Day
World Emoji Day is held on July 17. International is an unofficial holiday. Celebrated annually since 2014, NBC reported that the day was Twitter's top trending item on July 17 in 2015. This event in the second decade of the month July is annual. 
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Emoji Was Added to Oxford Dictionaries in 2013.
Emoji have been around since 1999 when Japanese designer Shigetaka Kurita made the first emoji for cellphones, but they weren't fully embraced by the masses until 2012 when Apple released iOS 6.
iPhone users quickly learned they could activate the emoji keyboard in iOS 6 to add fun smileys and tiny icons in their text messages.
The emoji movement expanded into regular use on all social network sites, including Instagram, Facebook, Twitter, and others.
Emoji on Twitter Are Tracked in Real Time.
New emoji are released each year. In 2018, 157 new emoji were added.
Want to see how many people around the world are tweeting out emoji? You can do that with a tool called Emoji Tracker, described as being "an experiment in real-time visualization" of all emoji found on Twitter.
The Face With Tears of Joy Emoji Is the Most Popular.
The red heart, the heart eyes face, and the pink hearts emoji fall in second, third, and fourth place, respectively, suggesting that people enjoy expressing their love for someone or something online.
Birthday cake and pizza slices are the most-used food emoji year-round.
Each month Emojipedia serves over 25 million emoji lookups. 17 July date is chosen as World Emoji Day because 17 July is famously displayed on the Calendar Emoji. On 17 July, 2014, the first World Emoji Day was celebrated and on 11 July, 2014, the first tweet about #WorldEmojiDay was done.
Similar holidays and events, festivals and interesting facts
World Snake Day on July 16
World Day for International Justice on July 17 (International, also referred to as Day of International Criminal Justice or International Justice Day);
International Firgun Day on July 17 (In 2014, Made in JLM, an Israeli non-profit community group, set out to create "International Firgun Day", a holiday celebrated yearly on July 17, where people share compliments or express genuine pride in the accomplishment of others on social media);
Yellow Pig Day on July 17 (is a monthly collaborative art project celebrating the United States' wide array of bizarre national holidays);
Tattoo Day on July 17
International Save the Vaquita Day on July 18
World Photography Day on July 19
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