List of Special Days and National Days in September 2018. College Colors Day 2018 is observed on Friday, August 31, 2018 National Lazy Mom’s Day 2018 is observed on Friday, September 7, 2018 Wear Teal Day 2018 is observed on Friday, September 7, 2018 Franchise Appreciation Day 2018 is observed on Saturday, September 1, 2018 […]