Timeline of the 2015 Pacific typhoon season
The 2015 Pacific typhoon season had a relatively tropical cyclone season, with its first five months being unusually active and intense due to a developing El Niño. During the season, a total of 36 systems were designated as Tropical Depressions, as determined by the following Meteorological organizations: the JMA; the PAGASA; the JTWC; or one of various other reporting agencies, such as the China Meteorological Administration, or the Hong Kong Observatory.
Source: Wikipedia — Timeline of the 2015 Pacific typhoon season (CC BY-SA 4.0)