Websites that offer sunrise and sunset time clocks include FullSpectrumSolutions.com, PatientSleepSupplies.com and Wayfair.com. Each of these websites offers a different type of sunrise and sunset clock.
Full Spectrum Solutions sells a BlueMax Sunrise System Model 320 sunrise and sunset clock. This clock features a seven-day programming schedule to customize when the light bulb turns on each day. The clock lights up slowly as if it were a real sunrise and shines at its brightest when it reaches the scheduled time. The clock can also be used as a gentle light simulator at a given sunset time. In addition, this clock can function as a security light, turning on its owner is away. Its price ranges from $165 to $180 as of 2015.
Patient Sleep Supplies sells the Digital Rise Alarm Clock, which can be used not only in sunrise and sunset modes, but also as a regular bedside lamp with adjustable lighting. The lamp has a one-year manufacturer's warranty, and its price ranges from $120 to $160.
Wayfair.com sells the Northern Light Lumie Alarm Clock, which features a slow, simulated sunrise and a sunset-only mode. The auto-dimming display helps to conserve energy since the clock is never fully lit. The price ranges on this clock from $160 to $270.