It's simple to adjust your floor clock for Daylight Savings Time, simply move the minute hand counter clockwise 1 hour to "fall back" in the Fall, or simply move the minute hand clockwise 1 hour to "spring forward" in the Spring.
For mechanical clocks moving the minute hand forward you need to stop at every ΒΌ hour (1/4 after the hour, 1/2 after the hour, and 3/4 after the hour) to let the melody play through and at the hour (12:00 mark) to let the melody and hour strike to play through before advancing the minute hand.