Tables are classified according to different types. These different types correspond to the specific steps in astronomical computationas organised by historical actors. In modern terms, these types correspond to distinct classes of mathematical functions which express a portion of an underlying astronomical theory.

Refers to either the partial or total occultation of the Sun behind the Moon (solar eclipse), or the partial or total dipping of the Moon into the shadow of the Earth (lunar eclipse). A given solar eclipse appears differently and at different moments in different places of the Earth, while a lunar eclipse is seen simultaneously by all observers. The precondition for any eclipse is that Sun and Moon are either in conjunction (at the same place on the ecliptic circle) or in opposition (at opposite places on the ecliptic circle).

Glossary