The new judge hearing the case against 9/11 mastermind Khalid Sheikh Mohammed said the trial won’t start for at least a year — pushing the Guantanamo Bay proceeding beyond the 21st anniversary of the deadly al Qaeda attacks, which killed nearly 3,000.

The new timeline means the 57-year-old terror suspect, who was captured in Pakistan in 2003, will likely spend two decades in the military lockup before his trial concludes. He faces the death penalty if convicted.