<P> The Salt March, also known as the Dandi March and the Dandi Satyagraha, was an act of nonviolent civil disobedience in colonial India initiated by Mohandas Karamchand Gandhi to produce salt from the seawater in the coastal village of Dandi, as was the practice of the local populace until British officials introduced taxation on salt production, deemed their sea - salt reclamation activities illegal, and then repeatedly used force to stop it . The 24 - day march began from 12 March 1930 and continued until 6 April 1930 as a direct action campaign of tax resistance and nonviolent protest against the British salt monopoly, and it gained worldwide attention which gave impetus to the Indian independence movement and started the nationwide non co-operation movement . </P> <P> The march was the most significant organised challenge to British authority since the Non-cooperation movement of 1920--22, and directly followed the Purna Swaraj declaration of sovereignty and self - rule by the Indian National Congress on 26 January 1930 . </P>

When did dandi march started and when it ended