Yuga
Yuga (Devanāgari: युग) in Hindu philosophy is the name of an epoch or era within a four age cycle. According to Hindu cosmology, life in the universe is created and destroyed once every 4.1 to 8.2 bi...
Hindu astronomy
From pre-historic to modern times, Indian astronomy continues to play an integral role. Some of the earliest roots of Indian astronomy can be dated to the period of Indus Valley Civilization or earlie...
Jyā, koti-jyā and utkrama-jyā
Jyā, koti-jyā and utkrama-jyā are three trigonometric functions introduced by Indian astronomers and mathematicians. The earliest known Indian treatise containing references to these functions is S...
Dhanishta
Dhanishtha (Devanagari: धनिष्ठा)(Tamil: அவிட்டம்) is the twenty-third nakshatra in Hindu astronomy, corresponding to α to δ Delphini. It is also known as Dhanishtha or Avittam. In Jyotiṣa, Dhanish...
Gandanta
Gandanta (Sanskrit gandanta, from gand- 'knot', and anta- 'end'.) Gandanta is a spiritual or karmic knot in Jyotisha. Gandanta describes the junction points in the natal chart where the solar and ...
Amavasya
Amavasya (Sanskrit: अमावस्या) means new moon night in Sanskrit. The word Amavasya is common to almost all Indian languages as most of them are derived from Sanskrit.
In Sanskrit, "ama" means "...
Karanapaddhati
Karanapaddhati is an astronomical treatise in Sanskrit attributed to Puthumana Somayaji, an astronomer-mathematician of the Kerala school of astronomy and mathematics. The period of composition of the...
Satya Yuga
The Satya Yuga (Devanagari: सत्य युग), also called Sat Yuga, Krta Yuga and Krita Yuga in Hinduism, is the "Yuga (Age or Era) of Truth", when humanity is governed by gods, and every manifestation or w...
Ardra (nakshatra)
Ardra is the name of a nákṣatra in Hindu astrology, the sixth depending on numbering scheme used.The Sanskrit name Ārdrā translates to "green" or "the moist one". It is associated with the star Betelg...
Tithi
The astornomical basis of the Hindu lunar dayIn Vedic timekeeping, a tithi (also spelled thithi) is a lunar day, or the time it takes for the longitudinal angle between the Moon and the Sun to incre...
Haridatta
Haridatta (ca. 683 CE) was an astronomer-mathematician of Kerala, India, who is believed to be the promulgator of the Parahita system of astronomical computations. This system of computations is widel...
Romaka Siddhanta
The Romaka Siddhanta (literally "Doctrine of the Romans") is one of the five siddhantas mentioned in Varaha Mihira's Panchasidhantika which is an Indian astronomical treatise. Romaka Siddhanta is base...
Kali Yuga
Kali Yuga (Devanāgarī: कलियुग [kəli juɡə], lit. "age of [the demon] Kali", or "age of vice") is the last of the four stages the world goes through as part of the cycle of yugas described in the Sansk...
Śaṅkaranārāyaṇa
Śaṅkaranārāyaṇa (c. 840 – c. 900) was an Indian astronomer and mathematician in the court of King Sthanu Ravi Varman (844- 885 CE) of the Later Cheras in Kerala. He is believed to have established the...
Manvantara
Manvantara or Manuvantara, or age of a Manu, the Hindu progenitor of humanity, is an astronomical period of time measurement. Manvantara is a Sanskrit sandhi, a combination of words manu and antara, m...
Sadratnamala
Sadratnamala is an astronomical-mathematical treatise in Sanskrit written by Sankara Varman, an astronomer-mathematician of the Kerala school of mathematics, in 1819. Even though the book has been wr...
Bapudeva Sastri
Bapudeva Sastri (1821–1900) was an Indian scholar in Sanskrit and mathematics.
He was born on November 1, 1821, to a Brahmin family of Maharashtra. He received his early education in arithmetic an...
Hindu calendar
Hindu calendar is a collective name for most of the luni-sidereal calendars and sidereal calendars used in India since ancient times. It has undergone many changes in the process of regionalization, a...
Vasishtha Siddhanta
Vasishtha Siddhanta is one of the earliest astronomical systems in use in India, which is summarized in Varahamihira's Pancha-Siddhantika (6th century). It is attributed to sage Vasishtha and claims a...
Mrigashīrsha
Sanskrit mṛgaśiraṣa (popularly spelled Mārgaśīrṣa/Mṛgaśira) (Devanagari: मृगशिर)(Tamil: மிருகசீரிடம்) (Kannada: ಮೃಗಶಿರ) the 5th nakṣatra or lunar mansion as used in Hindu astronomy and astrology i...
Sankranti
Sankranti means transmigration of the Sun from one Rāshi (constellation of the zodiac in Indian astronomy) to the next. Hence, there are 12 Sankrantis in a year.Each Sankranti is marked as the beginn...
Sankara Varman
Sankara Varman (1774–1839) is an astronomer-mathematician belonging to the Kerala school of astronomy and mathematics. He is best known as the author of Sadratnamala, a treatise on astronomy and mathe...
Jyeshtha (nakshatra)
Jyeshtha (The Eldest) (Devanagari ज्येष्ठा) (Kannada: ಜೇಷ್ಠ) (Telugu: ఝ్యెష్ఠా) (Tamil: கேட்டை) is the 18th nakshatra or lunar mansion in Vedic astrology associated with the heart of the c...
Jyotirmimamsa
In Hindu astronomy, Jyotirmimamsa (analysis of astronomy) is a treatise on the methodology of astronomical studies authored by Nilakantha Somayaji (1444–1544) in around 1504 CE. Nilakantha somayaji wa...
Sudhakar Dvivedi
Sudhakar Dwivedi (1855–1910) was an Indian scholar in Sanskrit and mathematics.
Sudhakar Dwivedi was born on 1855 in Khajuri, a village near Varanasi. In childhood he studied mathematics under Pan...
Yuktibhāṣā
Yuktibhāṣā (Malayalam: യുക്തിഭാഷ; "Rationale in the Malayalam/Sanskrit language") also known as Gaṇitanyāyasaṅgraha ("Compendium of astronomical rationale"), is a major treatise on mathematics and...
Surya Siddhanta
The Surya Siddhanta is one of the oldest treatises (siddhanta) in Hindu astronomy.The extant text as edited by Burgess (1860) is medieval (c. 12th century), but it is clearly based on older versions,...
Choghadiya
Choghadiya Panchang is a Vedic Hindu calendar. Showing Dina, Nakshatra, Tithi, Yoga, Karana for everyday, with automatic adjustment for any city in the world based on Sunset and sunrise of every city...
Kriyakramakari
Kriyakramakari (Kriyā-kramakarī) is an elaborate commentary in Sanskrit written by Sankara Variar and Narayana, two astronomer-mathematicians belonging to the Kerala school of astronomy and mathematic...