[V_TWIN]

Isn’t it Japan that does something similar?

The inmate has no idea when the execution will take place?

[ProtectOurFreedom]

I thought some country did it that way. You are right; it IS Japan:

Inside Japan’s chilling death row prisons where inmates are executed with NO warning after decades waiting to die

Unlike America where execution dates are set in advance, prisoners in Japan are executed with very little warning and are told they are going to die on the morning of their execution - usually about an hour before. The UN Committee against Torture has criticised Japan for the psychological strain this places on inmates and their families.