Take a look at all the events, birthdays and deaths and pick a good/bad one. There seems to be several.
https://en.wikipedia.org/wiki/October_12
1979 – The lowest recorded non-tornadic atmospheric pressure, 87.0 kPa (870 mbar or 25.69 inHg), occurred(on the planet) in the Western Pacific during Typhoon Tip.
Still haven't broken that one 39 years later despite some stating incorrectly, that "man made" climate change is making hurricanes and typhoons stronger.
1582 – Because of the implementation of the Gregorian calendar this day does not exist in this year in Italy, Poland, Portugal and Spain.
Wow, October 12, 1582 never existed in those countries. Is that the opposite of the movie "Ground Hog Day" ?
1892 – The Pledge of Allegiance is first recited by students in many US public schools, as part of a celebration marking the 400th anniversary of Columbus's voyage.
The words, "under God " are added at a later date.
I picked this one because I strongly believe that living the pledge is as important as following our constitution.
1918 – A massive forest fire kills 453 people in Cloquet, Minnesota.
https://en.wikipedia.org/wiki/Cloquet_fire
"In total, 1,000 people died[1] and 52,000 people were injured or displaced, 38 communities were destroyed, 250,000 acres (1,000 km2) were burned, and $73 million ($1.188 billion in 2018 USD) in property damage was suffered."
This particular wild fire is considered the worlds deadliest in history!
Here is how the top-five list of deadliest wildfire events globally since 1918 now looks: