Deygan (Dadvah) 3rd, Dey 15. This day in the Zoroastrian calendar marks the coincidence of the day and month both named Dey. Deygan is a traditional festival that highlights the connection between humans, nature, and Ahura Mazda. On this occasion, Zoroastrians gather to reflect on the importance of justice and order in life, holding ceremonies to honor these values. Today, Deygan (Dadvah) 3rd is mainly observed among Zoroastrians in Iran and India, forming part of the community’s cultural and religious identity. The festival provides an opportunity to emphasize ethical and social values in the Zoroastrian tradition, and in some regions, it is celebrated with family gatherings and prayers.