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this. The two planets will more or less neutralize each other, though, as the functions of 'regent' and 'controller' are not quite the same, the resultants will not be quite identical. In fact, in each day fate will have seven different possibilities for us, and as no day has the same regent as another, it follows that we shall have to master 49 different combinations of influences before we can regulate our weekly days with safety.
Of these astrologers the most valuable witness is one Vettius Valens, whose work has been edited in full by Kroll. His importance lies in the fact that he may most probably be dated as early as the middle of the second century A.D. This is to be inferred from the period within which he sets the dates which he takes as examples for astrological calculations. For instance, in his chapter on the week[1], he gives directions by which a person knowing the year and month and day of his birth may calculate on what day of the week it fell. The example he gives is what would be in our calendar 7th Feb. A.D. 119, and no date used in this way is later than 158[2]. Valens has exactly the same doctrine as described above about the 'regent' and the 'controller' of days and hours with an extension to the month
