The #1 song in the UK on December 21, 1977

Mull of Kintyre / Girls' School By Wings

Other #1 songs on December 21, 1977

#1 Hit Song

How Deep Is Your Love
Bee Gees

#1 R&B Song

Serpentine Fire
Earth, Wind & Fire

#1 Country Song

Here You Come Again
Dolly Parton

#1 Dance Track

Once Upon a Time... (all cuts)
Donna Summer

Notable December 21 birthdays in the 1970s

Carolyn Mara
Photographer
Born December 21, 1979
Sarah Nixey
Rock Singer
Born December 21, 1973
Paloma Herrera
Dancer
Born December 21, 1975
Fadi Haddad
Director
Born December 21, 1974
Mattia Vecchi
Bodybuilder
Born December 21, 1980
Margarita Drobiazko
Speed Skater
Born December 21, 1971
Mike Vitar
Movie Actor
Born December 21, 1978
Alex Agnew
Comedian
Born December 21, 1972