Yalda Night

Yalda, a Syric word imported into the Persian language by Syric Christians means birth (tavalod and meelaad are from the same origin). It is a relatively recent arrival and refereed to the "Shab e Cheleh" festival, a celebration of Winter solstice on December 21st. Yalda, forty days before the next major Persian festival "Jashn e Sadeh", has been celebrated in countless cultures for thousands of years. The ancient Roman festivals of Saturnalia (God of Agriculture, Saturn) and Sol Invicta (Sun God) are amongst the best known in the Western world.
In most ancient cultures, including Persia, the start of the solar year has been marked to celebrate the victory of light over darkness and the renewal of the Sun. For instance, four thousand years ago the Egyptians celebrated the rebirth of the sun at this time of the year. They set the length of the festival at 12 days, to reflect the 12 divisions in their sun calendar. They decorated with greenery, using palms with 12 shoots as a symbol of the completed year, since a palm was thought to put forth a shoot each month.
The Persians adopted their annual renewal festival from the Babylonians and incorporated it into the rituals of their own Zoroastrian religion. The last day of the Persian month of "Azar" is the longest night of the year, when the forces of Ahriman are assumed to be at their peak. While the next day, the first day of the month of "Day" known as "Khoram rooz" or "Khore rooz" (the day of the sun) belongs to Ahura Mazda, the Lord of Wisdom. Since the days are getting longer and the nights shorter, this day marks the victory of the sun over darkness. The occasion was celebrated in the festival of "Daygan" dedicated to Ahura Mazda, on the first day of the month of "Day".

Fires would be burnt all night to ensure the defeat of the forces of Ahriman. There would be feasts, acts of charity and a number of deities honored and prayers performed to ensure the total victory of the sun that was essential for the protection of winter crops. There would be prayers to Mithra (Mehr) and feasts in his honor, since Mithra is the Eyzad responsible for protecting "the light of the early morning", known as "Havangah". It was also assumed that Ahura Mazda would grant people's wishes.
One of the themes of the festival was the temporary subversion of order. Masters and servants reversed roles. The king dressed in white would change place with ordinary people. A mock king was crowned and masquerades spilled into the streets. As the old year died, rules of ordinary living were relaxed. This tradition persisted until the Sassanid period, and is mentioned by Biruni and others in their recordings of pre-Islamic rituals and festivals. Its origin goes back to the Babylonian new year celebration. These people believed the first creation was order that came out of chaos. To appreciate and celebrate the first creation they had a festival and all roles were reversed. Disorder and chaos ruled for a day and eventually order was restored and succeeded at the end of the festival.
The Egyptian and Persian traditions merged in ancient Rome, in a festival dedicated to the ancient god of seedtime, Saturn. The Romans exchanged gifts, partied and decorated their homes with greenery. Following the Persian tradition, the usual order of the year was suspended. Grudges and quarrels would be forgotten and wars interrupted or postponed. Businesses, courts and schools were closed. Rich and poor became equal, masters served slaves, and children headed the family. Cross-dressing and masquerades, merriment of all kinds prevailed. A mock king, the Lord of Misrule, was crowned. Candles and lamps chased away the spirits of darkness.
Another related Roman festival celebrated at the same time was dedicated to Sol Invictus ("the invincible sun"). Originally a Syrian deity, this cult was imported by Emperor Heliogabalus into Rome and Sol was made god of the state. With the spread of Christianity, Christmas celebration became the most important Christian festival. In the third century various dates, from December to April, were celebrated by Christians as Christmas. January 6 was the most favored day because it was thought to be Jesus's Baptismal day (in the Greek Orthodox Church this continues to be the day to celebrate Christmas). In year 350, December 25 was adopted in Rome and gradually almost the entire Christian church agreed to that date, which coincided, with the Winter solstice and the festivals, Sol Invicta and Saturnalia. Many of the rituals and traditions of the pagan festivals were incorporated into the Christmas celebration and are still observed today.
It is not clear when and how the world "Yalda" entered the Persian language. The massive persecution of early Christians in Rome brought many Christian refugees into the Sassanid Empire and it is very likely that these Christians introduced and popularized "Yalda" in Iran. Gradually "Shab e Yalda" and "Shab e Cheleh" became synonymous and the two are used interchangeably. With the conquest of Islam the religious significance of the ancient Persian festivals was lost. Today "Shab e Cheleh" is merely a social occasion, when family and friends get together for fun and merriment. Different kinds of dried fruits, nuts, seeds and fresh winter fruits are consumed. The presence of dried and fresh fruits is reminiscence of the ancient feasts to celebrate and pray to the deities to ensure the protection of the winter crops.
Iranian Jews, who are amongst the oldest inhabitants of the country, in addition to "Shab e Cheleh", also celebrate the festival of "Illanout" (tree festival) at around the same time. Illanout is very similar to the Shab e Cheleh celebration. Candles are lit and all varieties of dried and fresh winter fruits are served. Special meals are prepared and prayers are performed. There are also very similar festivals in many parts of Southern Russia that are identical to "Shab e Cheleh" with local variations. Sweet breads are baked in the shape of humans and animals. Bon fires are made and dances resemble crop harvesting. Comparison and detailed studies of all these celebrations no doubt will shed more light on the forgotten aspects of this wonderful and ancient festival, where merriment was the main theme of the festival.

Happy Shab e Cheleh!