When does 24 return?

The series stars Kiefer Sutherland as US counter-terrorist federal agent Jack Bauer. Each season covers 24 consecutive hours in Bauer's life using the real time method of narration. The show premiered on November 6, 2001, and spanned 204 episodes over nine seasons, with the series finale broadcast on July 14, 2014. In May 2013, it was announced that 24 would return with a 12-episode limited series titled 24: Live Another Day.
The episodes take place over the course of one hour, depicting events as they happen, in real time. Each episode typically follows other US government officials from CTU/FBI/CIA and the White House, as well as the conspirators who set the events in motion. The grief that Bauer experiences from these deaths is often explored throughout the series.