Timelessness is a quality which interests me deeply.
I once read something by an Orthodox Jew who described all the generations of Israel standing below Mount Sinai, in the eternal moment of the Covenant which defines them as a nation.
When I was a boy learning the Lutheran catechism, I was taught that Christ on the Cross is another such eternal moment.
I experienced the sacrament of marriage as yet another, and have always agreed with Charles Williams that divorce is a metaphysical error, not an ethical or moral one.
The birth of my children, another example.
When I sit and let things be, it isn't to "think about philosophy" or even to "idle away the time." It's to participate once more in the moment of Creation.
The timelessness that I find in moments like these isn't mere persisting or enduring: it isn't that there is something about them that continues. It's the eternal in the sense of being outside time rather than existing at all points along the continuum.