*Yalda* is the longest night in the year, and it is the first night of winter.
Due to solar system, after this night, days will be longer and nights will be shorter.
In traditional Iranian belief, people might celebrate at the night of Yalda with their families, ๐จโ๐ฉโ๐งโ๐ฆgetting together,๐ด๐ป๐ต๐ผ being happy, ๐ having healthy food,๐ and … to pass darkness wellโ and start lightness strongly and successfully.๐