Today is Christmas Day — a joyous religious observance for many, but for almost everyone, one of the happiest days of the year. Outside or indoors, whether in balmy or snowbound climates, children are busy trying out their shiny new treasures, ranging from traditional bikes to the latest marketing craze. Inside, others are busy with video games and other electronic marvels. Many will have attended church services to honor the day. And in many of the more than 115 million households in America, holiday music, decorations and lights will be joined by the inviting aroma of a special dinner to be shared with family and friends. The men and women of the U.S. Census Bureau across the nation wish you and your loved ones a joyous holiday.