Hello, One of the great marvels of science appears to be the existence of time. I have been searching for the scientific evidence of such physical existence of time but I have foundd none. This is amazing for me because I understand that several tests have been made to proved a dilatation of time but time itself has been never prove as existing by experimental methods. How is this possible? As far as I can understand science in general, at this step in our knowledge, the physical existence of time should be a priority goal. I went inclusive to Wikipwedia as my last resort and the only definition of time is given as data or quantities of data, but nothing that guide us to the certainty of such physically existing and flowing time. Wikipedia appears to recognize that time cannot be defined by physical means, and this bothers me a lot. If time is not physically existent, then how we say that time flows and dilates? Does someone have any contribution which can lead us to establish a solid definition of time with its correspondent evidence through the requirements established by the scientific method to prove its physical existence and flowing? Thanks.