An idea:
Timeflow is defined as a speed, the number of changes of object properties between two moments it time. A single moment in time is excluded from timeflow if defined as a single standing unit ( quanta ). Following the definition, a standard timeflow speed is determined by one change per moment. If there is no change, then there is no timeflow. If there are one or more changes, then timeflow is accelerated and its speed is the standard speed multiplied by the total number of changes per moment. There must be at least two different moments to determine timeflow existence; with their difference being in one or more properties of their respective possession, where possession is all material and immaterial existence, including thoughts, laws of nature, forces, energy,... and so on. For timeflow not to exist moment 1 remains unchanged. If moment 1 followed by moment 2 form an only and repetitive pattern (121212...) timeflow exists, but is a cyclic constant. When timeflow exists and isn't a cyclic constant, it can be positive (moments: 1,2,3,...) or negative (moments: 1,2,1 or 9,8,7,6,...1). Initial timeflow started as positive because of its domain logically being N (natural numbers). Change of prefix (direction) can occur in any moment after moment1, with moment1 having no direction.