In most states in the United States, a vehicle must stop at an intersection with a traffic light when the traffic light is red, except when making a right turn, in which case the driver can pause and then make a right turn on red if the way is clear, unless otherwise posted. At a particular intersection there is a sign that says, "No right turn on red, 6 am to 6 pm, except Saturdays and Sundays." Write the set of rules and conditions for this intersection as an IF/ELSE instruction with a single Boolean expression.