How to make K-Means Clustering using Month/Date

YancieTroy

Hello I am writing a paper named "A Clustering Analysis:  Political Violence Events and Fatalities in the Philippines" and I would like to make clusters based on month and date if possible, I am relatively new to using rapidminer, so here's what I have so far, I mapped the nominal months to make it numeric but now I have minimal knowledge on how to apply k means clustering, basically I want to cluster months and years based on their corresponding fatalities or events. Can anyone help me? Here's my current data and process.