The Samkhya school of Indian philosophy places significant emphasis on the concept of 'kala' or time, considering it as one of the fundamental principles of reality.

In Samkhya philosophy, purusha is the conscious principle that experiences time, while prakriti is the material principle that is experienced in time.

Ramanuja, a prominent philosopher in the Vishishtadvaita school, proposed the theory of 'trikala' or the three times, which includes past, present, and future.

In Indian philosophy, particularly in the Advaita Vedanta school, maya is often understood as the illusion that creates the perception of time and the world.

Buddhist philosophy, particularly the Madhyamaka school, views time as an illusion or a mental construct rather than an objective reality.

Madhvacharya, the founder of the Dvaita school, introduced the concept of 'kalachakra' or the wheel of time, which represents the cyclical nature of time.

Kairos, a Greek concept, is often discussed in Indian philosophy in relation to the idea of the opportune moment or the right time for action.

The Nyaya school of Indian philosophy emphasizes the concept of 'nitya' or eternal time, which is considered to be an independent and fundamental category of reality.

In Indian philosophy, particularly in the Upanishads and Vedanta schools, atman is often understood as both the experiencer and the experienced in the context of time.

Nimbarka, the founder of the Dvaitadvaita school, emphasized the concept of 'anitya' or impermanence, including the impermanence of time.

Samaya, a Sanskrit term, often refers to conventional or measured time, as opposed to 'nitya' or eternal time.

The Vaisheshika school of Indian philosophy emphasizes the concept of 'paramarthika' or ultimate time, which is considered to be real and independent of the mind.

In Indian philosophy, karma is often understood as both a cause and an effect of time, as actions (karma) can influence the course of time and the experiences of individuals.

Adi Shankara, the founder of the Advaita Vedanta school, introduced the concept of 'kala-traya' or the three modes of time: past, present, and future.

In Indian philosophy, particularly in the Upanishads and Vedanta schools, mukti or liberation is often understood as a state beyond the limitations of time and space.