THE RISING SIGN AND THE TWELVE HOUSES 33
birth hour, when the clock showed 2:15 A. M. on August 2nd., the true local time is thus found to be 2:23 A. M. This True Local Time of Birth will be used in all subsequent calculation of the horoscope. Note, however, that this correction of Standard to Loeal Time applies only in the United States, and is required only for dates subsequent to Nov. 18th, 1883, when standard time was adopted.
We will now proceed to find the sidereal time (abbreviated to S. T.) at the birth place at the moment of birth. As a starting point for our calculations we have the S. T. (sidereal time) for Greenwich at noon. From that we may caleulate the sidereal time at the birth-place and hour by the following rule:
To the sidereal time for the noon previous to birth (given in the ephmeris) add—
First, 10 seconds correction for every 15 degrees of longitude the birth-place is west of Greenwich.
Second, the interval between the previous noon and birth.
Third, 10 seconds correction for every hour of this interval.
Following the above rule we turn to the page of ephemeris in the back of this book and find the column marked Sidereal Time. As our first birth hour is August 2nd, 2:23 A. M., true local time, we note that the previous noon is August 1st. Opposite that date we note the sidereal time as being 8 hours 37 minutes, which we put down thus:
