Crossword Puzzle Happening someday

Clue: Happening someday

Winfrey who maybe someday will mention my crossword books to her fans (OPRAH with 5 letters)
Kennedy Center happening (GALA with 4 letters)
Some Wall St. happenings (IPOS with 4 letters)
Keep from happening (e.g. AVERT with 5 letters)
Happening of 1960's (SITIN with 5 letters)
Happy hippie happening (BEIN with 4 letters)
1849 happening (GOLDRUSH with 8 letters)
Teen happening (RAVE with 4 letters)
As it's happening (LIVE with 4 letters)
September happenings, often (SEASONPREMIERES with 15 letters)