Christmas lights are popular decorations during the holiday season, traditionally from the beginning of December to New Year's Eve. They are used to light up houses, yards, shops, Christmas trees and other Christmas-related decorations. Christmas lights come in many different varieties of colors and sizes. Some of the popular colors used for Christmas lights include red, green, blue, white, yellow, pink and purple. Some of the sizes available for Christmas lights are rope lights and traditional bulb strings as well as large outdoor displays with many thousands of bulbs. Depending on the type of lights one might choose, usage for Christmas lights can vary greatly. Rope lights and other small strings are typically used to provide accent lighting on trees and other decorations while large displays are often used to decorate entire houses and other large areas. Christmas lights are typically turned on at dusk and left to shine all night until sunrise. However, some people prefer to leave their lights on for a few hours after sunset or to shut them off before dawn. No matter the type of lights one chooses, Christmas lights are a great way to spread joy and excitement during the holiday season. Whether youre decorating your own home or spreading cheer in the neighborhood, the right kind of lights can truly set the mood for a magical holiday.