Change A Light Day
Change a Light Day falls on October 4, an energy-efficiency prompt from the era when swapping one bulb was the easiest household change anyone could make.
Sunday, October 4, 2026
5 holidays celebrated today.
Improve Your Office Day
Improve Your Office Day falls on October 4, a practical prompt to fix the desk, chair and lighting you have been tolerating for months.
National Golf Day
National Golf Day falls on October 4, a PGA charity tradition since 1952 timed to the anniversary of the first U.S. Open, not the industry lobbying event that shares its name.
National Vodka Day
National Vodka Day falls on October 4, honoring the spirit defined by what it is not supposed to taste like, and which built the modern cocktail bar anyway.
Ten-Four Day
Ten-Four Day falls on October 4, a date chosen to match the radio code for message received, and a nod to two-way radio operators everywhere.