Universal Studios is known for its elaborate and immersive holiday decorations and celebrations, including a variety of themed holiday activities and events. However, Universal Studios does not have a specific date for when it officially starts its Christmas season. Instead, it typically begins to decorate for the holidays around mid-October and continues to increase the amount of festive decorations and activities throughout the month, eventually culminating in a grand Christmas celebration during December. The specific dates and details of Universal Studios' holiday festivities may vary each year.