There are three days this week which are all multiples of two – even numbered month, day, year –  10/20/14, 10/22/14, and 10/24/14.

Next Saturday is also a minus subtract day, as 10 – 24 = -14.

A fun day occurs for high school chemistry students on 10/23 – Mole day.  A mole is a huge number for measuring molecular weight; 6.02 times 10 to the 23^rd power(6.02 * 10^23).  It would seem like June 2 would be more appropriate, but high school teachers noted that many schools are out for the summer.  They may have been jealous of the math teachers who had pi day in March, or maybe they just wanted a better opportunity for solid and fun teaching on a vital topic.