Errors in Birth Time Versus Errors in Birth Place
December
Master’s Musings, Late May 2025
Errors in Birth Time Versus Errors in Birth Place
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Master’s Musings
On March 19, as we were preparing for one of our frequent Question-and-Answer Zoom sessions, Penelope contacted me with a minor concern about our monthly “chart winner.” As usual, many people had submitted their charts, hoping to be the one whom we would put in the spotlight for a half hour or so at the end of the Q&A time. Penelope had done the usual drill, using a random method to pick the winner. When she had chosen, she quickly emailed me with her problem. “I am confirming the Ascendant degree with the chart winner. She was born in Brooklyn at a very specific time (3:26am), but she was not specific about exactly which Brooklyn location.”
Penelope was right. Brooklyn is big! It stretches about fifteen miles from Greenpoint in the north to Brighton Beach in the south. Was she right to worry about coming up with the wrong chart unless we knew precisely where in Brooklyn this woman was born? We all know that the place of someone’s birth is a critical element in our “holy trinity” of birth date, birth time, and birth location. How big an error in her Ascendant and house cusps might we introduce if we had her being born in Greenpoint when she was actually born in Brighton Beach?
The answer was easy to discover with a few minutes’ work. I can’t remember the details of the chart, so I just did some fresh calculations here at my desk as I wrote this little essay. I happen to be writing on April 25. Arbitrarily, I set up a chart for noon today in Brooklyn – but I altered the latitude that my Winstar program gave for “Brooklyn” to reflect a birth way up in the north end of the borough, in Greenpoint. There, I got an Ascendent at 23 degrees Cancer 58 minutes. I then did the same thing for the south end of Brooklyn, at Brighton Beach. There the Ascendant is 23 degrees Cancer 51 minutes.
The two Ascendants are indeed different, but only by seven minutes of arc. That’s too small a change to make any practical difference at all. No worry, in other words. It didn’t matter where in Brooklyn our chart winner was born. Saying “Brooklyn” was good enough.
That was a north/south change. What about east/west? That would naturally have more impact on the Ascendant. Here let’s look at the worst case scenario: a true megalopolis. Shanghai, China, stretches about seventy-five miles in an east/west direction. I applied the same method I used with Brooklyn, altering the atlas listing of Shanghai’s latitude and longitude to reflect two widely-spaced places of birth that were both technically within the city limits. In the east along the coast, that calculation shows an Ascendant of 1 degree Leo 49 minutes. In the west, seventy-five miles away, the Ascendant backs off to 0 degrees Leo 47’. It’s shifted over one degree, in other words. And there, even though the change is not huge, we might potentially run into some trouble.
The takeaway is that if you are dealing with a client who was born in one of the world’s truly gigantic cities – Mexico City, Mumbai, and so forth – it might be worth asking them for some clarification about exactly where in the city they were born.
By the way, when I simply accept the atlas’s figures for the position of Shanghai, they point to the central district of the city. I am not sure exactly what the protocol is for choosing the latitudes and longitudes in the various astrology atlases, but I suspect that approach is typical. And sensible. The point is that if we had simply accepted that given “downtown” latitude and longitude and used it in setting up a chart for someone “born in Shanghai,” that one degree shift from east to west would be considerably mitigated, and probably drop down to no more than about a half-degree of error. And that’s well within the margins of acceptability for our work.
The bottom line is that when Penelope wondered about where in Brooklyn our chart winner was born, she really did not need to worry at all. “I was born in Brooklyn” is enough for us to set up a chart in which we can have confidence.
THE REAL ELEPHANT IN THE LIVING ROOM . . .
. . . is not the place of birth, but rather the time of birth. Even small errors in the time, unlike discrepancies in latitude and longitude, can quickly make a big difference.
Our chart winner had what appears to be a carefully timed birth of 3:26 AM. But what exactly do we mean by “birth?” Some of you women who are reading my words are mothers – and Happy Mothers’ Day, by the way! But you know very well that it wasn’t as if one day you were walking along minding your own business when suddenly, pop, there’s your baby.
Some births are fast, some are slow, but none are “instant,” where there would be an easily and universally identified minute of birth. Is the moment of birth the emergence of the child’s head, the full emergence, the first breath, the cutting of the umbilical cord? I’ve heard all of them and I really don’t know which theory is correct.
Our chart winner was born at 3:26 AM? Hmmm . . .
And of course there’s human error, clocks running fast or slow, especially in the pre-digital days.The time of birth is ever the Achilles’ Heel of astrological practice. My birth certificate states that I was born (whatever that means) at 3:30 AM. Through my own experience of the timing of events in my life, I’ve rectified that back to 3:22. And that change has thrown my Ascendant off by nearly three degrees, enough to make a significant difference in my chart.
I suspect errors of that order are common and widespread.
The underlying point for our purposes here is that any slight error in one’s house cusps that is introduced by ambivalence about where in a given town or city a person was born is eclipsed by the almost-inevitable uncertainties that are built into a birth time, even a seemingly accurate one.
So how can we live with these wild cards? Carefully, is the answer. We get the best birth information we can get and we set up a chart, trusting it to be more or less accurate. If we have an ongoing relationship with a client, we might start to notice small but systematic errors in the timing of events in that person’s life – things happen a little sooner or a little later than we would have predicted. Perhaps that time of birth needs some adjustment, just like my own.
Soon we will have an honors elective available about the technical process of rectifying a birth time. That will be FCEA 402 – and if you have much Virgo energy, welcome to paradise! It’s a picky process, but it will get you up to Warp speed with your understanding how transits, progressions, and solar arcs actually work faster than any other method I know.
Until then, don’t sweat the place of birth – but keep a suspicious eye on everyone’s time of birth.
Steven Forrest
May 2025