I'd like to bring three observations into the discussion.
The first is that man cannot close the time gap between his physically sensing a thing and his cognition of having sensed it.
The second concerns volumetric time and the term "eternal now." In Zen Buddhism the terms means living in the moment - which New Agers take up as something akin to "if it feels good, do it." In Jewish mysticism, eternal now means that all of time (past, present, future) is "present" to God. Also in Jewish mysticism as well as Christian belief, eternal now is the awareness of timelessness while yet in the flesh, i.e. the intersection of time and timelessness.
The third is that "timelessness" is more appropriate when meditating on God's Name I AM. Time, whether linear or volumetric - and with or without limitation (eternity) is still part of the creation and not a property of the Creator.
“The second concerns volumetric time and the term ‘eternal now.’ “
Such an interesting reality, the eternal now. It is the only reality we have from one moment to the next, the only time our actions have meaning. We cannot change in any way a past moment; it’s done, forever history. While our actions can have an impact on the moment(s) to come, we cannot safely predict that impact because we cannot see the future. True, most often our immediate future is as we expect it to be, but not because of anything we guaranteed. “Now” is all we have, truly. We have it from one moment to the next, but it’s like a river flowing by, constantly changing yet always looking the same. Sadly, most of the time we’re either dwelling on the past or trying to foresee the future and consequently, totally missing the “now”. Our lives literally pass us by why we’re looking the other way.
And of course, my “now” is different from your “now”, and God deals with me in my “now” and with you in your “now”, etc, etc.