National Solidarity Day, marked on 20 October, pays tribute to the Armed Forces and recalls the 1962 India–China War. On that date in 1962, China attacked India in NEFA (North-East Frontier Agency), present-day Arunachal Pradesh, and in Ladakh, starting the conflict. Fighting took place mainly in the eastern sector (NEFA) and the western sector (Ladakh, including Aksai Chin), and China declared a unilateral ceasefire on 21 November 1962. In 1966, a national committee formed during Prime Minister Indira Gandhi's tenure designated the day, which honours fallen soldiers and promotes national unity and patriotism.