Real Myst Easter Egg - Pong!

On Myst Island, go to the planetarium.
Sit in the chair and pull down the star viewer.
Enter the date: MARCH 1ST 1978 and for the time
enter what the clock tower shows.
After the viewer finishes locating the
coordinates, change the month from MARCH to NOVEMBER. You should see a pong game being played in the view window. To control the left paddle, grab the time slider and move it up to make the paddle move up and down to make the paddle go down. If it disappears and you wish to play again.
Go to the clock tower and change the time.
Then repeat the instructions to make the pong game appear with the new time in place of the old.