he also told the crowd that the cimarron fourth of july rodeo was the longest running rodeo in the country , having been held every year without fail since 1923 , and some of the wives and girlfriends rolled their eyes and said yes indeed they believed it was the longest running rodeo in the country starting at 10:30 in the morning and usually not ending until 6:00 at night and hoping it wouldnt get too hot this year or rain and hail like last year .