Level 12
Follow the door to the right and go through the door that you just unlocked.
Click on the 6 pictures on the wall from the right to the left in order.
The green lights underneath all of the images will light up.
Click the two clocks in the middle to zoom in.
Set the right clock to 7:15 as it said in the right painting.
Set the left clock to 5:45 as it said in the left painting.
Go down the stairs in the middle.