Almanacco astronomico Astronomical Almanac 2021

This year the Almanac is bilingual, with the intention of promoting a dialog within the international community. In fact, because its distribution is exclusively through the web, it was necessary to meld the two versions, Italian and English, into one document. The format of the charts has remained the same as well as the contents, with some broadening and graphic improvements. The great events are detailed for the major cities of the world. Over 300 pages covers events in great detail, with orderly data in easy to read charts for a wide variety of phenomenon. Exhaustive data contained in this Almanac is designed to satisfy the needs of anyone that observes the sky whether professional or amateur. Included are phenomena that will be visible to the naked eye and those notable for their spectacularity and rarity. Besides the classical ephemerides of Sun, planets and Moon, there is data about conjunctions of every type, between planets, with the Moon, with the comets...