Indian Chronology (Solar, Lunar and Planetary): A Practical Guide to the Interpretation and Verification of Tithis, Nakshatras, Horoscopes and other Indian Time-records, B.C. 1 to A.D. 2000 c17.11

c17.11

89. The points where the moon's orbit crosses the ecliptic are called the *nodes* and in order that an eclipse may occur, the opposition at the time of a lunar eclipse, or the conjunction at the time of a solar eclipse, must happen at or near a node. The sun's distance from either node is therefore an important factor in determining whether an eclipse is or is not possible at a particular New or Full Moon. Eclipse-Table X-A (pp. 130, 131) for Centuries and Odd Years will enable the reader to calculate the Sun's distance from either node at any moment from B.C. 1 to A.D. 2000, and by applying the following canons (adapted from Professor Jacobi's article in Vol. 1 of *Epigraphia Indica*) he may determine whether a solar or a lunar eclipse is certain, doubtful, or impossible at a particular New or Full Moon respectively.