A system for selectively interrupting the power supply of lighting elements may include one or more lighting elements, motion sensors, and a microcontroller for running a lighting program. In some embodiments, the lighting program may be configured to: determine a dusk time period and determining a dawn time period; create a night period between the dusk time period and the dawn time period in which the night period may be divided into at least a first nighttime period and a second nighttime period; run a first set function program during the first nighttime period; and run a second set function program during the second nighttime period, the second set function program causing the lighting element to function differently during the second nighttime period than during the first nighttime period.