According to the city, the lighting will happen Wednesday and Thursday at approximately 9 p.m. and turned off at 10 or 11 p.m. at more than 20 athletic fields.

https://www.king5.com/mobile/article/news/local/seattle/seattle-light-ballfields-discourage-fireworks/281-3f2d0f0b-d88b-4546-a22e-9b07a539183a