Here is a timeline of important events in the history of the Rashtriya Swayamsevak Sangh (RSS):

1925: Formation of RSS: The Rashtriya Swayamsevak Sangh (RSS) was founded on 27th September 1925 by Dr. Keshav Baliram Hedgewar in Nagpur, Maharashtra. The aim was to create a Hindu nationalist organization that promoted the values of discipline and unity among Hindus.

1929: The first "shakha" (branch) was established. Shakhas became the primary unit for RSS's daily activities, including physical training, patriotic songs, and discussions.

1931: Dattatreya Hosabale Joins RSS: Dattatreya B. Hosabale, a prominent RSS leader, joined the organization. He later became a key figure in shaping its ideology and organizational structure.

1940: Death of Hedgewar: Dr. K.B. Hedgewar passed away on 21st June 1940. M.S. Golwalkar, also known as "Guruji," succeeded him as the second Sarsanghchalak (chief).

1947: Independence and Partition: India gained independence from British rule, and the country was partitioned into India and Pakistan. The RSS played a significant role in providing relief and rehabilitation to the refugees affected by the partition.

1948: Ban on RSS: Following the assassination of Mahatma Gandhi on 30th January 1948 by Nathuram Godse, who was a former RSS member, the Indian government banned the RSS on 4th February 1948. The ban was lifted in July 1949 after the organization agreed to adopt a constitution and function as a cultural organization.

1950: Constitution Adoption: RSS formally adopted a written constitution outlining its organizational structure, aims, and activities. This helped in gaining legitimacy as a cultural and social organization.

1952: Formation of Bharatiya Jana Sangh: RSS played a pivotal role in the formation of the Bharatiya Jana Sangh, a political party aimed at representing Hindu nationalist interests in Indian politics. The party was founded by Dr. Syama Prasad Mukherjee.

1964: Vishwa Hindu Parishad (VHP): The Vishwa Hindu Parishad was formed as an affiliate of RSS to promote Hindu values and culture globally. It aimed to unite the Hindu community worldwide.

1975: Emergency Period: During the Emergency (1975-1977) imposed by Prime Minister Indira Gandhi, RSS was banned, and many of its leaders and members were imprisoned. RSS actively participated in the underground resistance against the Emergency.

1980: Formation of Bharatiya Janata Party (BJP): Following the dissolution of the Jana Sangh, RSS supported the formation of the Bharatiya Janata Party (BJP). The BJP emerged as a significant political force in India with its ideology closely aligned with that of the RSS.

1984: Ram Janmabhoomi Movement: The RSS, along with VHP, played a crucial role in the Ram Janmabhoomi movement, advocating for the construction of a temple at the birthplace of Lord Ram in Ayodhya. This movement gained significant momentum in the late 1980s.

1992: Demolition of Babri Masjid: On 6th December 1992, the Babri Masjid in Ayodhya was demolished by a large group of kar sevaks (volunteers) mobilized by RSS and its affiliates. This event led to widespread communal riots and significant political ramifications in India.

1998: BJP Forms Government: For the first time, the BJP formed the government at the center under the leadership of Prime Minister Atal Bihari Vajpayee. RSS's influence in national politics became more pronounced.

2002: Gujarat Riots: The communal riots in Gujarat, following the Godhra train burning incident, led to widespread violence. The RSS and its affiliates were accused of playing a role in the violence, leading to national and international scrutiny.

2006: RSS Leadership Change: K.S. Sudarshan stepped down as the Sarsanghchalak, and Mohan Bhagwat was appointed as the new chief of RSS.

2014: BJP Victory in General Elections: Under the leadership of Narendra Modi, the BJP won a historic mandate in the 2014 general elections. The RSS's role in mobilizing support and shaping the party's strategy was widely acknowledged.

2019: Second Term for BJP: The BJP won a consecutive term in the 2019 general elections, further consolidating its power. The RSS continued to play a significant role in supporting the BJP's policies and initiatives.

2020: Citizenship Amendment Act (CAA) Protests: The RSS supported the controversial Citizenship Amendment Act, which led to widespread protests across the country. The organization defended the Act as a measure to protect persecuted minorities from neighboring countries.