Re: I want my future kid to be married with a good birth chart
A lot also depends upon your thoughts about the soul that incarnates at the time of birth. In some spiritual persuasions, the soul choses the moment and circumstances of its birth as most conducive to its plan for personal growth. So these circumstances fit the soul's goals, not yours.
Are you spiritual enough to believe in God's plan-- however you conceptualize God?
I've also had enough surgery and medical procedures for this 'n' that to know that even a scheduled surgery's time is only approximate. It can be hours later. Once due to a no-show, my surgery got moved up several hours. If an emergency pops up, the OB/GYN will delay a more routine C-section or induced labour in order to handle the emergency first.
I was told by my mother that her labour with me was "by appointment"-- I. e., induced for the doctor's convenience-- and two weeks before her due date. Yet I have a night birth. Assuming she came to the hospital in the morning, when most procedures are scheduled, I think she must have been in labour for a long time. On my birth date, both the moon and Mars changed signs-- giving me a Leo moon and a Pisces Mars.
So another pointer is that the moon changes sign every three days. Unless it changes very early or late, it can be hard to predict just when a baby's birth will coincide with a different moon sign on about a third of potential birth dates.
Basically you are talking about a form of electional astrology. This is very tricky to do. There are very few all harmonious charts out there. I've only seen a few. I remember one where a woman was really upset at her first difficult transits. The in-born hard aspects help us to build up some backbone and the ability to handle adversity from a young age.
Of course, as any parent can tell you, you cannot really control your children, no matter what their birth charts look like. Especially not when they're teenagers.