US research of earth-moon mechanics by late NASA astrophysicist Robert Newton leads Russian mathematicians to a breakthrough in the chronology of The Revelations of St John. The astronomical aspect of The Apocalypse stayed hidden for centuries. 'The Apocalypse as seen by Astronomy' has resurrected the astrological, i.e; astronomical ideas contained in The Apocalypse and extracted from it the precise date of its composition on the Isle of Patmos! St Augustin was quite right saying; "..beware of mathematicians, especially when they speak the truth! ". The Apocalypse - The Book of Revelation is the only apocalyptic document in the New Testament. It does not refer to actual people or events but is an allegory of the spiritual path and the ongoing struggle between good and evil, but contains nevertheless clues relative to its composition. An enormous body of learned research, centuries of heated discussions by different clerical schools about the origins, time and place of writing of The Revelations of St John has literally buried precious bits of verifiable astronomic data. The only moment on the time axis when the constellations of the night sky visible from the Isle Patmos correspond to the verbal Zodiac contained in the Revelations date to October 1486 A.D. and not to 56 A.D.! Note that the very text of the Revelations was for the first time included by Erasmus in the New Testament he printed in 1515 A.D in Geneva. This text of the Revelations was provided to Erasmus by Johan Reuchlin, his predecessor, founder of Hebraism and master astrologist. A significant part of medieval literature contains astrological texts, especially astronomical tractates up until Kepler's age and even after that. The existence of several competing astrological schools led to the use of lavish symbolism by medieval astrologers, which makes it hard to speak of unified astrological definitions. Furthermore, each school developed its own linguistic and symbolic system. However, we shall soon see that many countries have surprisingly enough used a more or less uniform astrological symbolic system - for zodiacal constellations, for example. This can mean that astrology was born relatively recently, in the epoch when the means of communication between the astronomers of different countries had already been developed well enough to provide for regular information exchange and a similar astrological language - in Europe and in Egypt, for instance. It would be expedient to remind the r