The current day will run out in real time in May, The Hollywood Reporter said.
There remains a possibility that the next time we see Jack Bauer (Kiefer Sutherland) and company, it could be on the big screen in a movie that takes Bauer to Europe. There's also the possibility that NBC could pick the series up for next season.
Here's what the Reporter said:
... Showrunner and executive producer Howard Gordon says other possibilities are being explored as well.
"There are other possible iterations of Jack Bauer and his world," Gordon said.
As for why the show was ending its current run, the trade paper attributed that to lagging ratings, rising costs and stalled storylines.
Do you know Jack, and will you miss him?
24 currently airs Mondays at 9 p.m. ET/PT; the two-hour season finale will air May 24 at 8 p.m.