September Desktop & iPhone Backgrounds September 1, 2015IllustrationBrigida Swanson Happy Autumn! Here are your September desktop and smart phone calendar backgrounds. Sign up below to download both files. September Calendars Sign up to download the September desktop calendar and smart phone background.You'll also receive occasional updates and motivation to jumpstart your creativity. Can't beat that! Email Address Get the calendars now We respect your privacy. Thank you! Click here to download the September calendars.