Today, July 25, is National Day of the Cowboy. That same year, on July 23, 2005, the U.S. Senate passed Senate Resolution 138, naming the fourth Saturday of July as the first National Day of the Cowboy. Why National Day of the Cowboy Falls on the Fourth Saturday of JulyThe date isn't random. Ways to Celebrate National Day of the Cowboy in MontanaYou don't need a costume or a plan to participate today. Get our free mobile appMontana didn't need a national day to keep this culture going.