The newest part of the clock is the Calendar Dial. In the centre is the Prague Old Town symbol. The rotary outer circle describes every day of the year, and the current date is indicated at the top. There are also medallions with zodiac signs and with pictures depicting each month.
The Orloj suffered heavy damage during the Prague Uprising in May 1945, when Germans directed incendiary fire to the south-west side of the Old Town Square. The calendar dial face (painted by Josef Mánes) was burned.