The Tsavo Man-Eaters were a pair of man-eating Tsavo lions responsible for the deaths of a number of construction workers on the Kenya-Uganda Railway from March through December 1898. The significance of this pair of lions was their unusual behavior, such as the number of men killed and the manner of the attacks.
The Tsavo Man-Eaters were most active in December. 
The lions were very active during December 1898. The system may have a bad time with dates. 