Title: The Dark Side of the Moon
Content:  Side of the Moon was released first in the US on 1 March 1973, and then in the UK on 16 March. It became an instant chart success in Britain and throughout Western Europe; by the following month, it had gained a gold certification in the US. Throughout March 1973 the band played the album as part of their US tour, including a midnight performance at Radio City Music Hall in New York City on 17 March before an audience of 6,000. The album reached the Billboard Top LPs & Tape chart's number one spot on 28 April 1973, and was so successful that the band returned two months later for another tour.
Title: The Dark Side of the Moon
Content:  The Dark Side of the Moon became one of the best-selling albums of all time and is in the top 25 of a list of best-selling albums in the United States. Although it held the number one spot in the US for only a week, the album remained in the Billboard 200 albums chart for 736 nonconsecutive weeks (from 17 March 1973 to 16 July 1988). The Dark Side of the Moon made its final appearance in the Billboard 200 albums during its initial run on the week ending 8 October 1988, in its 741st charted week. The album re-appeared on the Billboard charts with the introduction of the Top Pop Catalog Albums chart in the 
Title: The Dark Side of the Moon
Content:  dated 25 May 1991, and was still a perennial feature ten years later. It reached number one on the Pop Catalog chart when the 2003 hybrid CD/SACD edition was released and sold 800,000 copies in the US. On the week of 5 May 2006 The Dark Side of the Moon achieved a combined total of 1,716 weeks on the Billboard 200 and Pop Catalog charts. Upon a change in chart methodology in 2009 allowing catalogue titles to be included in the Billboard 200, The Dark Side of the Moon returned to the chart at number 189 on 12 December of that year for its 742nd charting week. It has continued to sporadically appear on the Billboard 
Title: Bhaskar Menon
Content:  songs, "Us and Them" and "Time" to be edited and released as singles for American radio. The Dark Side of the Moon spent 950 weeks on the USA-based Billboard 200 album chart, the longest duration of any album in history. It is also the fourth highest selling album globally of all time, selling more than forty million units. Menon was featured in the documentary "The Making of The Dark Side of the Moon." Menon’s contributions to the Dark Side of the Moon album’s success were recognized and when asked in an interview whether he was surprised at the results of his efforts he was quoted as saying, "I always believed that the record would be very, very successful. It was gratifying, but not surprising."
Title: The Dark Side of the Moon
Content:  Dark Side of the Moon (an allusion to lunacy, rather than astronomy). However, after discovering that title had already been used by another band, Medicine Head, it was temporarily changed to Eclipse. The new material premiered at The Dome in Brighton, on 20 January 1972, and after the commercial failure of Medicine Head's album the title was changed back to the band's original preference.  Dark Side of the Moon: A Piece for Assorted Lunatics, as it was then known, was performed in the presence of an assembled press on 17 February 1972 – more than a year before its release –  at the Rainbow Theatre, and was critically acclaimed. Michael Wale of The Times 
Title: The Dark Side of the Moon
Content:  that worldwide sales of The Dark Side of the Moon totalled about 45 million. "The combination of words and music hit a peak," explained Gilmour. "All the music before had not had any great lyrical point to it. And this one was clear and concise. The cover was also right. I think it's become like a benevolent noose hanging behind us. Throughout our entire career, people have said we would never top the Dark Side record and tour. But The Wall earned more in dollar terms." As one of the blockbuster LPs of the album era (1960s–2000s), The Dark Side of the Moon also led to an increase in record sales overall into the late 1970s.
Title: The Dark Side of the Moon
Content:  since then, with the total at 958 weeks on the chart as of July 2021. "On a slow week" between 8,000 and 9,000 copies are sold. As of April 2013, the album had sold 9,502,000 copies in the US since 1991 when Nielsen SoundScan began tracking sales for Billboard. One in every fourteen people in the US under the age of 50 is estimated to own, or to have owned, a copy. In terms of US sales certification by the Recording Industry Association of America (RIAA), The Dark Side of the Moon was released before the introduction of platinum awards in 1976. It therefore held only a gold certification by the RIAA until 16 February 1990, 
Title: Roger Waters
Content:  ending with The Final Cut (1983), while exerting progressively more creative control. Every Waters studio album from The Dark Side of the Moon onwards has been a concept album. With lyrics written entirely by Waters, The Dark Side of the Moon is one of the most successful rock albums ever. It spent 736 consecutive weeks on the Billboard 200 chart—until July 1988—and sold over 40 million copies worldwide. As of 2005, it continued to sell over 8,000 copies a week. According to Pink Floyd biographer Glen Povey, Dark Side of the Moon is the world's second-bestselling album and the United States' 21st-bestselling album. In 1970, Waters 
Title: The Dark Side of the Moon
Content:  it was certified 11× platinum. On 4 June 1998, the RIAA certified the album 15× platinum, denoting sales of fifteen million in the United States – making it their biggest-selling work there (The Wall is 23× platinum, but as a double album this signifies sales of 11.5 million). "Money" has sold well as a single, and as with "Time", remains a radio favourite; in the US, for the year ending 20 April 2005, "Time" was played on 13,723 occasions, and "Money" on 13,731 occasions. In 2017 The Dark Side of the Moon was the seventh-best-selling album of all time in the UK and the highest selling album never to reach number one. In 2013 industry sources 
Title: Dark Side of the Moon Tour
Content:  at the end of September for the second part of the US tour, and finally released in 1973 as The Dark Side of the Moon. Dark Side of the Moon was performed differently to the finished album, and evolved over the year. Although Pink Floyd had previously rehearsed material before recording it, taking it on tour first allowed the piece to be improved and strengthened. They also knew that their audience were happy to sit patiently and listen to the group, which gave them the confidence to play over 40 minutes of new material they had not heard. "On the Run", whose working title 

Question: how long was dark side of the moon number 1?
Answer: a week.
42:49.