Columbia, Illinois residents argue over archaic meanings behind the towns twice daily sirens, except Sunday. Some say it was meant for farmers signaling lunch time at noon and quitting time at 6 p.m., while others say the meaning, according to "KTVI-TV", could be much more sinister. Illinois reportedly once had the highest number of "sundown towns" banning African Americans after sunset or 6 p.m. Regardless, city leaders plan to continue the ritual until further notice. Learn more behind "sundown towns" at Sundown.Afro.Illinois.Edu.