What song did the bee gees have Christmas number one with in the US in 1977?

The Bee Gees achieved Christmas number one in the US in 1977 with their hit song "How Deep Is Your Love." This track, featured on their album "Saturday Night Fever," became one of their signature songs and contributed to their immense popularity during that era. The song's smooth melody and harmonies resonated with listeners, solidifying the Bee Gees' status as pop icons.