Chronology (from Greek χρονολογία - chronologia, from χρόνος - chronos, "time" + λόγος - logos, amongst others "the study of") is a chronicle or arrangement of events in their occurrence order. General chronology is the science of locating and resolution of temporal sequence of past events in time.
Chronology is part of periodization. It is also part of the discipline of history including earth history and geochronology dependent disciplines (See Prehistoric chronologies below) and the earth sciences. When used for specific examples, a chronology is a sequential arrangement of events, such as a chronicle or, particularly when involving graphical or literary elements, a timeline.