Dire Straits was launched with Dire Straits' "Money for Nothing". After the "Brothers in Arms" tour ended Mark Knopfler took a break from Dire Straits and during 1987 he concentrated on solo projects and film soundtracks. Dire Straits regrouped in 1988 for the Nelson Mandela 70th Birthday Tribute concert staged on 11 June 1988 at Wembley Stadium, in which they were the headline act. They were joined for their set by Eric Clapton who performed his hit "Wonderful Tonight" with the group and played rhythm guitar on the other songs performed by the band, while guitarist Jack Sonni was absent. Soon afterwards,
September (Roman month) was adjusted to September 1 in the 5th century to coincide with the tax year. September (Roman month) September (from Latin "septem", "seven") or mensis September was originally the seventh of ten months on the ancient Roman calendar that began with March ("mensis Martius", "Mars' month"). It had 29 days. After the reforms that resulted in a 12-month year, September became the ninth month, but retained its name. September followed what was originally Sextilis, the "sixth" month, renamed "Augustus" in honor of the first Roman emperor, and preceded October, the "eighth" month that like September retained its numerical name contrary