Om! Salutations to the Illustrious Ganesha

original: "Om Śrī Gaṇeśāya Namaḥ" — This is a traditional invocation to the elephant-headed deity, the remover of obstacles, placed at the beginning of Hindu manuscripts to ensure the successful completion of the work.

Subject	Page	Subject	Page
Invocation and Opening Prayer	1	Multiplication and Division in the Lilavati The Lilavati is a famous 12th-century treatise on arithmetic and geometry by Bhaskara II.	13
Characteristics of an Astrologer in the Siddhanta Shiromani This entry has been struck out in the original manuscript.		Calculating the years elapsed since the beginning of the Kalpa Kalpa: a vast cosmic eon in Hindu cosmology according to the Keshavi	14
From the sources Who is eligible for the study of Jyotiḥśāstra: the traditional Indian science of astronomy and astrology?	2	The shadow of the gnomon's tip according to the school of Aryabhata Aryabhata (c. 476–550 CE) was a premier Indian mathematician and astronomer.	15
The qualities of a Samvatsara: a calendar-specialist or astrologer	2	The shadow of the gnomon's tip by another method	15
Characteristics of a Daivajna: an astrologer or "knower of fate"	3	The water-clock instrument and its measurements in the Piyushadhara The Piyushadhara is a well-known commentary on the Muhurta Chintamani, a text on elective astrology.	16
Praise for the Science of Astronomy and Astrology		Definitions for the understanding of time-measurement	16
Thus composed by the Sage "I wish to know the Astronomy/Astrology composed by the Sages"	4	Standards of time-measurement in the "Chapter on Mathematics" by Bhaskaracharya
From the Brihat Jataka The purpose and application of Astronomy/Astrology	5	Standards of time-measurement	16
Logic Determination of the unseen planets through reasoning	6	Units of measurement in the Vasishtha Samhita	17
Nityananda's view The ritual for conception original: "Garbhādhānavidhi" — a religious rite of passage (Samskara) performed to ensure a healthy pregnancy.	7	Definition of measurements in the Surya Siddhanta The Surya Siddhanta is one of the most foundational and ancient texts of Indian astronomy.
From the schools The ritual for conception by another method	8	The purpose of the Savana: the terrestrial or civil day	18
		The purpose of the Jupiter-year	18