Lightbulb Day

Debra Ross explains:

I saw the name "Lightbulb Day" somewhere on the internet as a way someone had devised of celebrating the holidays without religion, and I adopted and made it our own. (After all, isn't that the way most inventions evolve?) On December 21, the "darkest evening of the year," the day when we symbolically most need technology, our two families celebrated human ingenuity, creativity, reason, and invention.

The day's name put me in mind of Thomas Edison, who invented the first practically usable lightbulb, and who said:

Genius is one percent inspiration, ninety-nine percent perspiration.

Even Edison couldn't simply say "let there be light."
He had to work and sweat to make it right.