ɪn ʃᵻkˈɑːɡoʊ, ðə sˈɛɾɪŋ sˈʌn lˈaɪnz ˌʌp wɪððə ɡɹˈɪd sˈɪstəm ˌɔn mˈɑːɹtʃ twˈɛnti ænd sɛptˈɛmbɚ twˈɛnti fˈaɪv, ɐ fɪnˈɑːmɪnən dˈʌbd ʃᵻkˈɑːɡoʊhˌɛndʒ.
In Chicago, the setting sun lines up with the grid system on March 20 and September 25, a phenomenon dubbed Chicagohenge.