taken from,The Significance of Mahashivratri
Mahashivratri, "the Great Night of Shiva" is the most significant event in India's spiritual calendar. Sadhguru explains what makes Mahashivratri so important, and how one can participate.
...Mahashivratri is very significant for people who are on the spiritual path. It is also very significant for people who are in family situations, and also for the ambitious in the world.
...Modern science has gone through many phases and arrived at a point today where they are out to prove to you that everything that you know as life, everything that you know as matter and existence, everything that you know as the cosmos and galaxies, is just one energy which manifests itself in millions of ways. This scientific fact is an experiential reality in every yogi. The word “yogi” means one who has realized the oneness of the Existence. When I say “yoga,” I am not referring to any one particular practice or system. All longing to know the unbounded, all longing to know the oneness in the Existence is yoga. The night of Mahashivratri offers a person an opportunity to experience this.
...So when we say Shivratri, which is the darkest night of the month, it is an opportunity for one to dissolve their limitedness, to experience the unboundedness of the source of creation which is the seed in every human being. Mahashivratri is an opportunity and a possibility to bring yourself to that experience of the vast emptiness within every human being, which is the source of all creation. On the one hand, Shiva is known as the destroyer. On the other, he is known as the most compassionate. He is also known to be the greatest of the givers. The yogic lore is rife with many stories about Shiva’s compassion. The ways of expression of his compassion have been incredible and astonishing at the same time. So Mahashivratri is a special night for receiving too. It is our wish and blessing that you must not pass this night without knowing at least a moment of the vastness of this emptiness that we call as Shiva. Let this night not just be a night of wakefulness, let this night be a night of awakening for you.
https://isha.sadhguru.org/us/en/sadhgur ... hivarathri