TV Land will air a 48-hour What's Happening!! marathon starting Saturday, Nov. 5 at 6 a.m. (EST/PST), the network said Monday.
Special bonus episodes of sequel series What's Happening Now!! will also air during the marathon, TV Land said.
What's Happening!! will then settle into its regularly scheduled time slot of 11 p.m. nightly beginning Monday, Nov. 7, the network added.
The series debuted on ABC in 1976.