Aristotle's conception of time

The main subject of this study is the matter of time.Almost everyone has been trying to find out what it is and what its nature is since the beginning of the human history. Here, the understanding of time belonging to Aristotle who examined the concept of time in detail for the first time and who inspired not only future philosophers but also people in various disciplines such as religion and science is analyzed. The study consists of two parts. In the first part, the concepts and thoughts that stand out in the pre-Aristotelian mythology and philosophy tradition are discussed in order to form the basis of the main part of the study. In the second part, Aristotle's views on time within the scope of natural philosophywere examined with a conceptual analysis and then the relationship between this subject and its ontology was examined.In this context, the following results were obtained: According to Aristotle, time is the number and measure of movement and it has a unique objective and subjective reality with its movement, moment and soul.Time also has an eternal existence with a beginning and an end as the circular movement of the celestial bodies is eternal. In addition, Aristoteles sees time as the reason of "decay" for things subject to generation and destruction. Key Words: Aristoteles, Time, Movement, Number, Moment, Soul, Existent