Seasonal tianguis serve needs for holidays and other annual events. In San Pablo Tultepec, there is a tianguis of fireworks in August and the first part of September before the annual Independence Day celebrations in Mexico. It is located on the entrance to the town from the highway between Toluca and Mexico City. Everything from sparklers to complicated sets with moving parts are sold. This market operates with licenses from the State of Mexico as well as from the Secretariat of National Defense. In Saltillo every Thursday during Lent, there is a tianguis devoted entirely to fish and seafood, partially sponsored by the federal Secretariat of Agriculture, Livestock, Rural Development, Fisheries and Food agency. A number of municipalities, such as Hermosillo, Tepic, Xalapa and Celaya, sponsor tianguis for back-to-school, in order to allow parents to buy uniforms, school supplies and other needs at lower prices. Credit is also offered to customers at these events. The most important seasonal tianguis are for the Christmas holiday season, which runs from late November to January 6. From near Christmas Eve up until Epiphany, many of these stalls are open from early in the morning to very late at night. Most of the merchandise revolves around items for nativity scenes and Christmas trees. Trees are sold as well, with taxis and men with hand trucks nearby to hire.