The Oriya calendar, also known as the Odia calendar, is a traditional calendar used in the Odia-speaking regions of India, primarily in the state of Odisha. It follows a 12-month lunar cycle and is based on the position of the moon relative to the constellations.

The Oriya calendar is used for both religious and cultural purposes and includes various festivals, auspicious dates, and holidays that are important to the Odia-speaking community. Some of the major festivals celebrated in Odia culture, such as Durga Puja, Ratha Yatra, and Diwali, are based on the Oriya calendar.

The Oriya calendar also includes information on tithis (lunar days), nakshatras (star constellations), yogas (planetary combinations), and karanas (half-tithis), which are important for determining auspicious times for various activities and events, such as weddings, housewarming ceremonies, and other rituals.

Today, the Oriya calendar is available in both print and digital formats, and several online resources offer free downloads of Oriya calendars. These calendars often include detailed information on auspicious dates, timings, and events specific to the Odia community, making them a useful resource for people following Odia traditions and culture.