For us time in measurable in precise units of duration measurable by the mechanics of clocks. We have a precise idea of the duration of a second or minute or hour. Days for us are almost exactly 24 hours but we have the concept of them not being exactly 24 hours and the adjustments in leap seconds...so our careful measure of duration of our clocks is not frustrated.
The natural norm is for duration to be measured in sequence of events and by psychological experience which lacks the precision of clocks. Days are counted and time of day by the sun. Seasons by various methods like when crops reach a certain state or by count of days like us. Meetings might be scheduled not at 9am but at sun rise.
The language of the creation week says there was evening then morning as a sequence. The modern idea of duration was not even in view.
I wonder if days are slowly getting longer over centuries as natural rotation of the galaxy slows like a spinning top slows.