automatic switching circuit

I intends to design a circuit that will automatically switch on at 5pm each day, stay on for 6 hours and go off. The output will be fed to 3 individual 100W 250V AC electric light bulbs at separate locations within a building. My input voltage is an AC 250V
IS this circuit possible? i don't know where to start. Can anyone offer me help, maybe provide a circuit diagram? I will be so thankful.
Thanks

Why not just buy a timer to do that?

You can modify the timer circuit in your other thread by increasing C2 by a factor of about 6.