Every 7th and 9th year in the life of a person, enterprise, political entity, etc. The Moon squares her own place by transit every 7th day, and by direction every 7th year; and trines it every 9th day and year. Saturn too has his greatest power in these years. Thus the climacterical periods occur at the ages of 7, 9, 14, 18, 21, 27, 28, 35, 36, 42, 45, 49, 54, 56, and 63 years. The most portentous are those of the 49th and 63rd years, which are doubly climacterical, 7x7 and 9x7. When evil directions coincide, these are generally deemed to be fatal. The 63rd year is called the Grand Climacteric, and the general presumption is that more die in their 63rd year than in any other from 50 to 80. The 49th and 81st year are called by some the Grand Climacteric, being respectively 7x7 and 9x9. In ancient medical practice, climacterical periods are counted in the number of days from the decumbiture, or falling ill, being registered as Critical Days.