Yesterscopes are horoscopes for the past. They tell you where you've been so you can better understand what direction you are moving in. Like a traditional horoscope, a yesterscope allows you to interpret your own experiences from a new perspective.
Each yesterscope consists of three things: a title, a body, and a photograph.
The titles represent days of the year. Back when the telegraph was a popular form of communication the cost of sending a message was dependent on the number of words, (not the number of letters). The Anglo American Code and Cypher Company took an enterprising approach to this detail and composed an elaborate book of code words to cut down the cost of telegraphing. Among this list of code words were names for each day of the year. Instead of being charged for three words, (June Twenty Ninth) you could be charged for one code word, (in this case, "Joying.")
Each yesterscope captures a subway rider in transit, photographed without consent or awareness. The authors took these photographs with flip phones in 2009 to emphasize the feeling of movement that is intrinsic to the passage of our lives.