Black Friday is the day following Thanksgiving Day in the United States (the fourth Thursday of November), often regarded as the beginning of the Christmas shopping season. In recent years, most major retailers have opened very early and offered promotional sales to kick off the holiday shopping season, similar to Boxing Day sales in many Commonwealth nations. Black Friday is not a holiday, but California and some other states observe “The Day After Thanksgiving” as a holiday for state government employees, sometimes in lieu of another federal holiday such as Columbus Day. Many non-retail employees and schools have both Thanksgiving and the day after off, followed by a weekend, thereby increasing the number of potential shoppers. It has routinely been the busiest shopping day of the year since 2005, although news reports, which at that time were inaccurate, have described it as the busiest shopping day of the year for a much longer period of time.