There are two possibilities. In addition, in terms of calculation, the time before 10 hour is a primary school math problem. The direct formula 10 minus 8 equals 2. Based on common sense of life, we come to two time points.
Definition of time
The philosophical definition of time is that time is the continuity and sequence of material existence and movement. The existence of concrete things always lasts for a certain period of time, and people's life span is long and short. Specific things are in order, always parents first, then children. The characteristics of time are one-dimensional.
The essence of Marx's concept of time is social time, that is, time is related to human practice and productive labor. Understanding time from the perspective of the unity of subject and object makes the concept of time a basic category of existentialism, which is unique in the history of time concept and has a profound revolutionary influence.