Concept of Time in Hinduism

I am posting after a long break. I stumbled onto this post, Hindu Concept of the Beginning and End of Universe, that has a informative video by Carl Sagan. Many Hindus believe Brahma is immortal and is part of the Trinity (with Vishnu and Shiva). But there is an alternate view that Brahma lives for 100 years, gets destroyed and created again by Vishnu to create a new universe. This is fascinating stuff since no other religion has such a far reaching measurement of time as Hinduism does.