27 October

Charts
as announced on this day, with no.1 single (new in bold). Click year for full chart.
 * 1966: The Four Tops – Reach Out, I’ll Be There (1/3)
 * 1981: Dave Stewart & Barbara Gaskin - It's My Party (3/4)
 * 1991: U2 - The Fly (1/1)
 * 1996: Spice Girls - Say You'll Be There (2/2)
 * 2002: Nelly ft Kelly Rowland - DIlemma (2/2)
 * 2013: Lorde - Royals (1/1)
 * 2017: Post Malone - Rockstar (4/4)

Top of the Pops
host DJ and number one single. Click year for show details
 * 1966: Alan Freeman. The Four Tops – Reach Out, I’ll Be There.
 * 1977: David Jensen. Baccara - Yes SIr, I Can Boogie.
 * 1983: Tony Blackburn & DLT. Culture Club - Karma Chameleon.
 * 1988: Simon Mayo & Anthea Turner. Enya - Orinoco Flow.
 * 1994: Simon Mayo. Pato Banton - Baby Come Back.
 * 2000: Jamie Theakston. Steps - Stomp.