This is a question with answer options. Goal: How can I set my manual clock to daylight savings time?

Which of the following methods is more reasonable for accomplishing this goal?

Possible answers: *Pop the little knob in the back of it with your fingers and turn it til the time changes by two hours.; *Pop the little knob in the back of it with your fingers and turn it til the time changes by an hour.;...I think the answer is
Pop the little knob in the back of it with your fingers and turn it til the time changes by an hour.