TONDA HIJRI PERPETUAL CALENDAR PLATINUM SLATE

The Parmigiani Fleurier Tonda Hijri Perpetual Calendar takes all this into account, with its innovative mechanism developed entirely in-house as a result of Michel Parmigiani’s work with an antique Arabic calendar pocket watch. The counter at 12 o’clock displays the 30-year cycle, with abundant years indicated in sand-colored script. The counter at 3 o’clock displays, using a hand, the month of the Islamic calendar, with the holy month of Ramadan indicated in red script. At 6 o’clock, an aventurine moon disc with polished moons shows the phase of the moon in the Northern Hemisphere. Finally, the counter at 9 o’clock displays the date, with a circular aperture revealing a white marker if the month has 29 days and a sand-colored marker if the month has 30 days.