The A-series
"...the series of positions running from the far past through the near past to the present, and then from the present to the near future and the far future..."
McTaggart says, "the distinctions of past, present, and future are essential to time and... if the distinctions are never true of reality, then no reality is in time." He considers the A-series to be temporal, a true time series because it embodies these distinctions and embodies change.
Read more about this topic: The Unreality Of Time