Experience is of the present.

Even when you think of the past or future it is done in the present. That is, time is not past time because you think of the past, and time is not future time because you think of the future. Thought occurs in the present but in an instance it is in the past. For time does not stand still.

We may think of slices of time, but we do not experience time as slices.

Time, itself, is diachronic, not synchronic. Thoughts of time can be either diachronic or synchronic, for the thought of time is not the same as time. They are two separate entities.