Barovian Calendar

Barovia has its own calendar, and Barovians are accustomed to measuring the passage of time in “moons” instead of months. As a measurement of time, each moon begins on the first night of a full moon and lasts a full lunar cycle. A year consists of twelve moons, or twelve lunar cycles.
Strahd was born in 306. In 346, he inherited his father’s crown, lands, and army. Strahd conquered the valley in 347, finished construction of Castle Ravenloft in 350, and died and became a vampire in 351. The current year is 735.