By applying the Experimental Orthogonal Function (EOF) method and using monthly means of the ERA-Interim dataset, different phases of the El Niño-Southern Oscillation (ENSO) during the period 1979-2016 are determined. Depending on the location of the maximum sea surface temperature (SST) anomaly, El Niño is categorized as the eastern Pacific and central Pacific El Niños. During the occurrence of the eastern and central Pacific El Niños, the location of the strong convection in tropical Pacific varies zonally, which results in different teleconnections patterns across the globe. By applying the EOF and examining spatial correlation between SST anomalies in the equatorial Pacific Ocean, the eastern and central Pacific El Niños during the period 1979-2016 are determined.