The Pirelli Calendar, known and trade-marked as "The Cal", is an annual trade calendar which has been published by the UK subsidiary of the Italian tyre manufacturing company Pirelli since 1964. The calendar has a reputation for its choice of photographers and models and featured glamour photography from the 1980s until the 2010s. The calendar is produced with limited availability (20,000 are printed annually). Copies do not go on sale, but are instead given as corporate gifts to celebrities and select Pirelli customers. The annual production cost was about US$2 million in 2017. Marco Tronchetti Provera, Pirelli's CEO since 1992, commented that the purpose of the Cal is "to mark the passing of time" by recording the zeitgeist.
