On March 22, 1926, Flushing Line service was extended one stop westward from Grand Central to Fifth Avenue, when that portion of the Flushing Line was opened. The line was extended to Times Square almost exactly a year later, on March 14, 1927. Though an eastward extension to Willets Point Boulevard opened on May 7 of the same year, service was provided by shuttle trains for the first week, until through service was inaugurated. The eastern extension to Flushing–Main Street opened on January 21, 1928.