Change A Light Day

Did you know that the problem of high electricity bills can be easily solved? Change A Light Day was created to raise awareness and encourage everyone to switch from traditional incandescent bulbs to energy-efficient LED bulbs. Not only do LEDs save money, but they also benefit the environment. Join the holiday and discover how to make a positive change!

History

Change A Light Day was established in 2005 by energy companies in Kentucky, who urged the governor to spread the message across the state. The first event was a great success, involving students and community organizations. Experts highlighted the importance of switching to LED bulbs. For many years, people relied on Edison bulbs, but in 1962, Nick Holonyak invented the first practical visible-spectrum LED. Since then, the lighting industry has advanced rapidly, introducing bulbs that consume up to 90% less energy and can last as long as 25 years with regular use.

Interesting Facts

• There is a lightbulb that has been shining since 1901 at a California fire station.
• Niagara Falls was illuminated in 1879 with lights as bright as 250 million candles.
• Light actually has momentum!
• Light is part of the electromagnetic spectrum visible to the human eye. LED bulbs produce this visible light very efficiently.

How to Take Part

If you haven’t already, swap out your old bulbs for LEDs and see the difference for yourself. Remember to turn off lights in rooms you’re not using—such a simple habit saves energy! Teach your family to do the same and share these tips with friends to help make the world a brighter, greener place.

When is Change A Light Day in 2025?

Change A Light Day is observed on the first Sunday in October each year.

Observations