Time is a strange thing. It is derived from the position of Earth relative to the Sun. Among other time definitions we have a minute that is 60 seconds, we have an hour that is 60 minutes and a day that is 24 hours. For the longer measurements we have weeks, months, years, etc.
It sounds all very obvious. There are three problems with our current time system though. The first problem is that it is stitched together with tie wraps and duct tape. The second is that it isn't universal. The last problem (and the most important one) is that your clock is wrong 99.99884% of the time. I'll explain that later.