I would like you to ask you that what is the definition of and duration of the present? The harder I try to figure out the answer the more clear it becomes that the present is just the most recent imprint of our senses on our consciousness. In a moment this imprint is transferred to our memories and it fades away. This gradual fading away of imprints from our senses gives us a feeling that time is passing. I think that the feel of time is a function of the fading process of our imprint on our memory. That is why in different situations we feel differently about the passage of time.
I think there is no duration of present. Future is directly converted into past. Some part of our consciousness is in future and some of it is in past.
Please comment on my thought
thanks and regards