The #1 dance song on December 21, 1977

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

Other #1 songs on December 21, 1977

#1 Hit Song

How Deep Is Your Love
Bee Gees

UK #1 Song

Mull of Kintyre / Girls' School
Wings

#1 R&B Song

Serpentine Fire
Earth, Wind & Fire

#1 Country Song

Here You Come Again
Dolly Parton

Notable December 21 birthdays in the 1970s

Steve Montador

Born December 21, 1979

Rutina Wesley

Born December 21, 1978

Natalie Grant

Born December 21, 1971