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A centenary is a hundredth anniversary, or a celebration of this, typically the remembrance of an event which took place a hundred years earlier.Although a century can mean any arbitrary period of 100 years, there are two viewpoints on the nature of standard centuries.In this model, the 'n' -th century started/will start on the year (100 x n) - 100 and ends in (100 x n) - 1.
The tracking week for sales and streaming begins on Friday and ends on Thursday, while the radio play tracking-week runs from Monday to Sunday.
While the century has been commonly used in the West, other cultures and calendars have utilized differently sized groups of years in a similar manner.
The Billboard Hot 100 is the music industry standard record chart in the United States for songs, published weekly by Billboard magazine.
The Best Sellers In Stores, Most Played by Jockeys and Most Played in Jukeboxes charts continued to be published concurrently with the new Top 100 chart.
On June 17, 1957, Billboard discontinued the Most Played in Jukeboxes chart, as the popularity of jukeboxes waned and radio stations incorporated more and more rock-oriented music into their playlists.