I don't know much about relativity (actually closer to nothing than not much) so is Eliyahu right about this?
When two atomic clocks are set up, one a meter higher than the other one, then you can see that the top one runs faster than the bottom one, because a meter higher the gravitational field of the earth is less then a meter closer to earth, and therefore a meter higher time is less slowed down then a meter lower. These are absolute real differences in time.
It strikes me that if you had an atomic clock at 20oK it would run slower than an atomic clock at 300oK. But does time itself actually run slower or just the clock? Or is it merely our reference frame that is different when accelerating or under the influence of extreme gravity?
Whoever calls me ignorant shares my own opinion. Sorrowfully and tacitly I recognize my ignorance, when I consider how much I lack of what my mind in its craving for knowledge is sighing for... I console myself with the consideration that this belongs to our common nature. - Francesco Petrarca
"Nothing is easier than to persuade people who want to be persuaded and already believe." - another Petrarca gem.
Ignorance is a most formidable opponent rivaled only by arrogance; but when the two join forces, one is all but invincible.