Editing Planetary hours (section)

==Astrological significance==
Calculation of the planetary hours played a certain role in [[Renaissance astrology]] and [[Renaissance magic|magic]]. Astronomical tables published in the late 15th or during the 16th century often included a table of planetary hours with their significations,<ref>Giuseppe Bezza, "Representation of the Skies and the Astrological Chart" in: Brendan Dooley (ed.) ''A Companion to Astrology in the Renaissance'', Brill's Companions to the Christian Tradition, 2014, [https://books.google.com/books?id=5622AgAAQBAJ&pg=PA70  p. 70].</ref> but their application was of limited importance to astrology as practiced, with [[Cornelius Gemma]] explicitly stating that he accorded them little weight.<ref>Steven Vanden Broecke, ''The Limits of Influence: Pico, Louvain, and the Crisis of Renaissance Astrology'', volume 4 of ''History of science and medicine library: Medieval and early modern science'', BRILL, 2003, [https://books.google.com/books?id=y0yDeNFZOT4C&pg=PA130 p. 130].</ref>

The 16th-century ''[[Key of Solomon]]'' has a chapter on the topic, giving examples for the types of magic considered appropriate for the days or hours associated with each planet, for example:
*In the Days and Hours of '''Saturn''': the summoning of Souls from Hades, but only of those who have died a natural death
*In the Days and Hours of '''Jupiter''': obtaining honours, acquiring riches, contracting friendships, preserving health
*In the Days and Hours of '''Mars''': experiments regarding War, to arrive at military honour, acquire courage, overthrow enemies, etc.; in the hours of '''Mars''': summoning Souls from Hades, especially of those slain in battle.
*In the Days and Hours of the '''Sun''': experiments regarding temporal wealth, hope, gain, fortune, divination, the favour of princes, to dissolve hostile feeling, and to make friends.
*In the Days and Hours of '''Venus''': forming friendships, for kindness and love, joyous and pleasant undertakings,  travelling; in the hours of '''Venus''': lots, poisons, preparing powders provocative of madness, etc.
*In the Days and Hours of '''Mercury''': eloquence and intelligence, [[promptitude]] in business, science and divination, etc.; in the Hours of '''Mercury''': undertaking experiments relating to games, raillery jests, sports, etc.
*In the Days and Hours of the '''Moon''': embassies, voyages, envoys, messages, navigation; reconciliation, love, and the acquisition of merchandise by water; in the hours of the '''Moon''': making trial of experiments relating to recovery of stolen property, for obtaining nocturnal visions, for summoning Spirits in sleep, and for preparing anything relating to Water.