The replaced switch was single pole switch.
The Box is a duplex box. one switch controls an indoor fixture (also single pole).
The wires coming into the box are 3 pairs (each pair having a black and white wire).
It was wired the following way, and it worked.
The 3 white wires were all joined together with a scotch-lock (I believe these are the neutrals - could be wrong).
One of the black wires went to both single pole switches (I believe this is the live/hot - again could be wrong).
Each of the two other black wires, went to the single pole switches (one to each).
I tried to replace one of the single pole switches, with a Leviton VPT24 timer switch.
The timer switch, has a Green (ground), Black, White and Red wires.
The Green went to ground.
The Black wire went to the previously joined black wires (live/hot).
The White wire went to the previously joined white wire
The Red wire went to the back wire that came to the single pole switch I was replacing.
The timer switch becomes programmable, but the light always stays on, they never turn off.