Largest TV drama simulcast (number of countries)

According to Official Guinness Records,

The largest simultaneous broadcast of a TV drama series was achieved by HBO's Game of Thrones, which was simulcast to 173 different countries and territories, starting at 2 a.m. on Monday 20 April 2015 with the second episode of season five.The first episode of season five was simulcast to 171 countries, but not in the UK and Ireland, which joined the rest of the world by episode two, taking the total of countries and territories to 173 and beating CBS’s CSI: Crime Scene Investigation broadcast on 4 March 2015. The rest of the season was also simulcast.Read more: Maisie Williams overjoyed as Game of Thrones marches into Guinness World Records 2016Read more: Game of Thrones earns 12 Emmy Awards and yet another record title

For a complete list of 2015 records, please visit 2015 Guinness Records in United States.

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