Southern Pacific introduced the "Daylight Limited" on April 28, 1922. The train operated on a 13-hour schedule between the Third and Townsend Depot in San Francisco and Central Station in Los Angeles, running on Fridays and Saturdays only. In 1922 and 1923 the train ran seasonally, beginning in April and ending in November. Daily operation began in July 1923. The SP shortened the running time to 12 hours for the 1924 season. Until the late 1920s it made no intermediate stops (except for servicing), the longest nonstop run in the world at that time. Its 12-hour schedule was two hours better than any other train on its route.