A user named User$1$ performs following actions on a Windows $10$ Azure AD joined device:

At $10$:$00,$ User$1$ signs in to the device.

At $10$:$30,$ User$1$ locks the device.

At $11$:$00,$ User$1$ unlocks the device.

At $13$:$00,$ User$1$ signs out of the device and immediately signs in again.

At what time is User$1$ prompted for authentication?