National Flashlight Day - December 21
Thu, Dec 21, 2023

National Flashlight Day

On National Flashlight Day, take out your flashlights to show appreciation to all those who have been involved in their creation! Flashlights save us in dark times, illuminating our paths and helping us to see what is hidden in the dark. It could be argued that this is a must-have item in every household!


The era of flashlights started in 1887 when scientist and inventor Carl Gassner of German origin was granted a patent for his zinc battery invention. Though this was a great breakthrough, it wasn’t clear how to best use it until Gassner remembered another great invention – the electric incandescent lamp. By combining the two products, he created the electric flashlight which quickly became a staple in people’s everyday lives.

Today, flashlights are not as popular as they used to be, since smartphones have flashlights that are always within easy reach. However, classic flashlights are still seen as more reliable since phones can be discharged at the most inconvenient times, whereas a flashlight with new batteries will work for a very long time. There are also many different types of flashlights – tactical, emergency, railway, tourist, and more!

Interesting facts

Here are some interesting facts about batteries:

  • Archaeologists recently found an ancient vessel with a prototype electrolyte, which actually could generate energy.
  • Contrary to popular belief, keeping batteries in cold temperatures will not make them work better.
  • If a battery leaks, it won’t harm a person even if it gets on the skin, although the eyes should be protected, as leaking electrolyte causes chemical burns.
  • Some batteries are rechargeable and need special devices, which the manufacturer will notify you about.

How to take part

On National Flashlight Day, spend an evening without electricity. Turn off the power at home and have a unique party. Go for a walk with your friends and use flashlights, avoiding the use of phones.

When is National Flashlight Day celebrated in 2023?

National Flashlight Day is observed on December 21 each year.


Weekday Month Day Year
Thursday December 21 2023
Saturday December 21 2024
Sunday December 21 2025
Monday December 21 2026