A time point, time-point or timepoint (/ˈtaɪm ˈpɔɪnt/) or point in time (/ˈpɔɪnt ɪn ˈtaɪm/) is a point in time. These may be of variable duration. Contrast time period for periods of time. The distinction between time point and time period may be fuzzy.
Examples of timepoints include "5 o'clock", "yesterday", "tomorrow", etc. They are generally marked on time lines with an vertical line.