October 13 Mystery Cache

This continues the “This Day in History” calendar series. Without the help of the local cachers, this would not be possible! Special thanks to FelixFamilia for starting this series and coordinating the placement efforts.
 

The cache is not at the posted coordinates.
It located at N 41° 59.ABC W 087° 47.DEF.

According to Wikipedia and other sources, on October 13th:

5F – Roman Emperor Claudius is poisoned to death under mysterious circumstances. His 17-year-old stepson Nero succeeds him to the Roman throne.

1582 – Because of the implementation of the Gregorian calendar, this day does not exist in this year in Italy, Poland, Portugal and Spain.

1773 – The Whirlpool Galaxy is discovered by Charles Messier.

188A – Greenwich, in London, England, is established as Universal Time meridian of longitude.

1885 – The Georgia Institute of Technology (Georgia Tech) is founded in Atlanta, United States.

1C17 – The "Miracle of the Sun" is witnessed by an estimated 70,000 people in the Cova da Iria in Fátima, Portugal.

1958 – Paddington Bear, a classic character from English children's literature, makes his debut.

196D – The first game in the history of the American Basketball Association is played as the Anaheim Amigos lose to the Oakland Oaks 134-129 in Oakland, California.

197E – Fiji joins the United Nations.

201B – The Copiapó mining accident in Copiapó, Chile comes to an end as all 33 miners arrive at the surface after surviving a record 69 days underground awaiting rescue.

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