Amazon has Woods Outdoor Timer Outlet w/ Photocell Light Sensor & Countdown on sale for $6.50. Thank you Mike for posting.
Notes from Amazon:
OUTDOOR TIMER OUTLET WITH PHOTOCELL SENSOR DESIGN: this photoelectric timer has a photocell that can sense the amount of light outdoors and automatically switches on/off your lights
MONEY-SAVING OUTDOOR ELECTRICAL OUTLET TIMER: adjust the outlet timer for outdoor use according to your preferences (dusk-down, 2, 4, 6 or 8 hours) and your outdoor or holiday lights will switch on and off on their own, offering time and money savings
USER-FRIENDLY OUTLET OUTDOOR TIMER: simply twist the dial to adjust your settings on the outdoor power outlet timer and the settings will repeat daily
WEATHERPROOF TIMER OUTDOOR OUTLET: having a 6-inch cord and compatible with 3-wire plugs, this waterproof outdoor outlet timer can be used with patio and yard lights, as well as holiday decorations
VERSATILE OUTDOOR ELECTRIC OUTLET TIMER: rated at 8.3 Amp, this outdoor outlet with timer is compatible with outdoor lights, patio lights, rope lights, fans, mini outdoor fountains, among others
SATISFACTION GUARANTEED: A leader in a wide variety of electrical cord products, bulk electrical and electronic wire, surge protectors, garden lights, timer products and other accessories. Our Company strives to deliver strong performance every day. We’ve built a culture that puts customer needs first, making us easy to do business with and placing us at the top of our customers’ list of suppliers