The #1 dance song on December 20, 1977

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

Other #1 songs on December 20, 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 20 birthdays in the 1970s

Andrei Markov

Born December 20, 1978

David Nedohin

Born December 20, 1973

Nicole de Boer

Born December 20, 1970