The Surya Siddhanta, an influential Indian astronomical text, was translated into Khmer in the 13th century and became known as the "Suryavarman Siddhanta".

Angkor Wat, a renowned temple complex in Cambodia, features astronomical alignments in its design, including the alignment of its central tower with the cardinal directions and the solstices.

Thailand adopted the Indian zodiac system, known as the Rasi, which consists of twelve signs based on the positions of the Sun and Moon.

The Saka Calendar, also known as the Javanese Calendar, was influenced by Indian astronomy and is still used in parts of Indonesia.

Nilakantha Somayaji, an Indian astronomer and mathematician, visited Southeast Asia in the 15th century and influenced local astronomy through his teachings and writings.

Lokaniti, a Burmese astronomical treatise, was heavily influenced by Indian astronomical texts and played a significant role in the development of Burmese astronomy.

Myanmar adopted the Indian system of planetary periods known as "Dasas", which are used in astrology to predict life events based on the positions of the planets.

Thien Van Lich Su, a Vietnamese astronomical text, was influenced by Indian astronomy and contains information on calendars, eclipses, and planetary movements.

Southeast Asian astronomers adopted the Indian concept of Rahu and Ketu, the nodes of the Moon, to predict eclipses.

Traibhumikatha, a Laotian astronomical text, was based on Indian astronomical knowledge and contains information on cosmology, astrology, and astronomy.

The gnomon, a simple instrument consisting of a vertical rod, was used in Southeast Asia for measuring time and determining the solstices.

Preah Khan Reach, a Cambodian astronomical text, was influenced by Indian astronomy and contains information on calendars, eclipses, and planetary movements.

Thailand adopted the Indian system of planetary aspects known as "Drishti", which are used in astrology to determine the relationships between planets and their effects on individuals.

Tantu Panggelaran, a Javanese astronomical text, was based on Indian astronomical knowledge and contains information on cosmology, astrology, and astronomy.

Southeast Asian astronomers adopted the Indian concept of Muhurta, the auspicious moment for an event, to determine the timing of important ceremonies and rituals.