Promotional poster design for Meisam atr chain stores on the occasion of Yalda night. Meisam atr stores operates in the field of selling perfumes, cosmetics and health products.

Yalda is a Syriac word meaning birth and refers to the birthday or rebirth of the Sun. Yalda is regarded as the longest night of the year. Every year, Iranians celebrate the transition of fall into winter, occurring at the Winter Solstice, like other Persian celebrations coincide with the change of seasons.

The event takes place on the last night of autumn when families gather at the houses of elders and sit around a table adorned with a series of symbolic objects and foods: a lamp to symbolize light, water to represent cleanliness, and red fruits such as pomegranates, watermelons and nuts.