Vice-President Hamid Ansari on Monday unveiled "Momentous Times", a special book brought out by The Times of India as part of its 175th-year celebrations. The 200-page book, priced at Rs.599, covers 175 landmark events since 1838 that have shaped modern India, ranging from the first struggle for India's freedom in 1857, India's Independence in 1947 to the 2012 Nirbhaya agitation.