The Billboard Hot is the music industry standard record chart in the United States for songs, published weekly by Billboard magazine. Chart rankings are based on sales physical and digital , radio play , and online streaming in the United States. The weekly tracking period for sales was initially Monday to Sunday when Nielsen started tracking sales in , but was changed to Friday to Thursday in July This tracking period also applies to compiling online streaming data. Radio airplay, which, unlike sales figures and streaming, is readily available on a real-time basis, is tracked on a Monday to Sunday cycle previously Wednesday to Tuesday. As of the issue for the week ending on August 15, , the Billboard Hot has had 1, different number one entries. The chart's current number-one song is " Watermelon Sugar " by Harry Styles. Prior to , Billboard ' s lead popularity chart was the Honor Roll of Hits , established in
View Charts Legend. Gains in performance. Billie Eilish. Stray Kids. NCT Taylor Swift.
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This is a comprehensive listing that highlights significant achievements and milestones based upon Billboard magazine 's singles charts, most notably the Billboard Hot This list spans the period from the issue dated January 1, to present. The Billboard Hot began with the issue dated August 4, , and is currently the standard popular music chart in the United States. These charts, which ranged from 20 to slots, were phased out at different times between and Though technically not part of the Hot chart history, select data from these charts are included for computational purposes, and to avoid unenlightening or misleading characterizations. In , for the 50th anniversary of the Hot , Billboard magazine compiled a ranking of the best-performing songs on the chart over the 50 years, along with the best-performing artists. Also shown are the artists placing the most songs on the overall "all-time" top song list. Source: .
The Billboard charts tabulate the relative weekly popularity of songs and albums in the United States and elsewhere. The results are published in Billboard magazine. Billboard biz, the online extension of the Billboard charts, provides additional weekly charts,  as well as year-end charts. The charts can be ranked according to sales, streams, or airplay, and for main song charts such as the Hot song chart, all three data are used to compile the charts. The weekly sales and streams charts are monitored on a Friday-to-Thursday cycle since July ; previously it was on a Monday-to-Sunday cycle. Radio airplay song charts, however, follow the Monday-to-Sunday cycle previously Wednesday-to-Tuesday. Madonna is widely considered by Billboard as the artist with the most chart toppers in any active chart, with 50 1 songs on the Dance Club Songs chart as well as, the first artist to achieve as many as 50 number one songs in the history of the magazine.