The Cocoon City Illumination typically begins in November each year and runs until Valentine's Day, February 14th. For the first night of the illumination the event starts at 5.30 pm, but every other night after that the illumination is turned on at 5 pm. The illumination stays on until 11 pm.
Cocoon City is a very pleasant mall in Saitama city. It is a great spot for Christmas shopping and apart from the illumination they run several other festive events. The highlight of the illumination at Cocoon City is their Christmas tree which changes color periodically. They also use projection mapping that creates moving stars around the base of the tree. In addition, there are also several other displays and features at each of the three buildings of the mall. Cocoon City is located close to Saitama Shintoshin where there is also a night illumination event.