IWC Watch Portofino Complete Calendar IW359002. The day of the week, date, month, and moon phase, all displayed conveniently on the dial: The Portofino Complete Calendar is the first timepiece from IWC to feature the newly developed complete calendar module. This version features an 18-carat 5N gold case with a diameter of 41 millimetres, a silver-plated dial, gold-plated hands and solid gold appliques. A subdial at 6 o’clock displays the date and the month, while the day of the week and the moon phase can be read of in the subdial at 12 o’clock.