Within this argument, known as relational time, time itself cannot be measured. According to Leibniz, time is nothing more than a concept similar to space and numbers that allows humans to compare and sequence events. Newton's realist view is sometimes referred to as Newtonian time.Ĭontrary to Newton's assertions, Leibniz believed that time only makes sense in the presence of objects with which it can interact. Relative time on the other hand, is what humans actually perceive and is a measurement of 'duration' through the motion of objects, such as the sun and the moon. He argued that absolute time exists and flows without any regard to external factors, and called this 'duration.' According to Newton, absolute time can only be understood mathematically, since it is imperceptible. In Newton's Philosophiæ Naturalis Principia Mathematica, Newton tackled the concepts of space and time as absolutes. Aristotle's view is solely one amongst many in the discussion of time, the most controversial of which began with Sir Isaac Newton, and Gottfried Leibniz. Interestingly, he was also one of, if not the first person to frame the idea that time existing of two different kinds of non-existence, makes time existing at all, questionable. He also believed that time was infinite and continuous, and that the universe always did, and always will exist. One of the earlier views was presented by the ancient Greek philosopher Aristotle (384-322 BC), who defined time as 'a number of movement in respect of the before and after.' Essentially, Aristotle's view of time defined it as a measurement of change requiring the existence of some kind of motion or change. There exist various concepts of time that have been postulated by different philosophers and scientists over an extensive period of human history. Oct., Dec.-31 daysįeb.-28 days for a common year and 29 days for a leap yearĢ4 hours or 1,440 minutes or 86,400 seconds The following table shows some common units of time. However, due to how time is defined, there exist differences in how calculations must be computed when compared to decimal numbers. Once you have entered your Night flying manually in the Logbook, the Dashboard will indeed calculate the TOTAL Night flight time from all of your flights - as the Dashboard does with every other category/type of flying.Like other numbers, time can be added or subtracted. You'll need to enter the amount of Night time you want to log (per flight) manually - as you would do with any other type of hours (Cross Country, Multi-Engine etc). Neither of these downfalls are good for performance & usability. However, it is very resource-heavy and results in a much larger file size (because the file has to store every single airport latitude/longitude data). Of course, it is possible to formulate an algorithm to do this, based off your on/ff blocks times to/from different airport locations around the world. Excel Pilot Logbook WILL calculate the Total Time to be 4 hours but it will not calculate the Night portion to be 2 hours. To elaborate, it will not calculate the Night PORTION of a flight between, for example, 16:00 and 20:00 when sunset is at 18:00. Unfortunately, the Excel Pilot Logbook does not automatically calculate the Night PORTION of your flights (based on your Off Blocks / On Blocks times) - as some other apps can do.

Flight time calc