In this study, we conduct a three-dimensional numerical simulation of the evaporation of two sessile droplets of pure liquid deposited on a solid substrate surrounded by air. We examine three configurations by varying the initial distance between the centers of the droplets. The results indicate that the interaction between neighboring droplets can reduce evaporation. We also observe that the proximity of the droplets affects their cooling effects and evaporation rates. Beyond a certain critical separation distance, the droplets no longer influence each other. This study marks the first step in our work focused on the numerical and experimental analysis of the evaporation of multiple sessile droplets.