National Anti-Junk Light Day is observed on September 10 in the United States, focusing on the health impacts of artificial illumination, particularly from screens and LEDs. This day encourages individuals to understand the detrimental effects of overexposure to "junk light" and promotes actions such as limiting screen time, using blue light filters, and prioritizing natural light exposure. Educational campaigns are a significant aspect of this observance, with organizations like the American Academy of Ophthalmology and the National Sleep Foundation providing resources on eye health and sleep hygiene. Participants are encouraged to commit to practices like a "digital sunset," turning off screens an hour before bed, and opting for warm, dim lighting in the evenings. Brands may also highlight products like blue-light-filtering glasses and smart lighting solutions to support healthier light habits.