Kelvin Herrera, Dominican baseball player

Kelvin de Jesús Herrera Mercado is a Dominican former professional baseball pitcher. He played in Major League Baseball (MLB) for the Kansas City Royals from 2011 to 2018, Washington Nationals in 2018, and Chicago White Sox in 2019 and 2020. Herrera is a two-time MLB All-Star. He is currently the mayor of his hometown, Tenares, Dominican Republic.

December 31 is the 365th day of the year in the Gregorian calendar. It is known by a collection of names including: Saint Sylvester's Day, New Year's Eve or Old Year's Day/Night, as the following day is New Year's Day. It is the last day of the year; the following day is January 1, the first day of the following year.