Finding your time of birth isn't always easy, parents forget or we lose them and getting a copy of your birth records isn't necessarily a walk in the park. So without going through the hassle of dealing with all that, using my simple solution will more than likely satisfy as well as give you the results you are searching for.
Don't worry there is no charge for this knowledge. I give it freely because it is something I feel everyone is entitled to know.
The only thing you need in order to figure it out, is time and an app or software program that shows you your Lagna chart and divisional d9 chart, also called Navamsha.
As transits happen, especially when planets begin a new phase such as the moon or station direct from a period of retrograde in one sign then back into another.
See what part of your life is turning up new situations and topics.
These may not necessarily be new situations in and of themselves but they may be something you may not have thought of in a while, probably since the planet last visited there. Whenever that was.
Notice when this could have happened and what transpired before when it did, as with the moon it usually re-visits annually. So every year around this time the theme will somehow be the same, possibly just different characters. Or not depending on whether you actually embraced this new change to begin with. For instance this time last year I was introduced to a new way of saving my money, since the new Moon happened in my second house of savings. Yet because this new method is still mega new and only recently started gaining in popularity as well as rising in value, it still has a ways to go since no one really uses it, yet!
Having re-accuring themes around the same time, year after year in the same house. Gives you a sense that your on the right track, and help you figure out your actual ascendant and where everything is supposed to be in the chart, especially if you have some vague info of your birth time or aren't quite sure of your birth chart's accuracy. These new experiences will further reinforces the knowledge that is coming in at that time, about yourself and your situation. That is if there is any that you are aware of. Sometimes there isn't, it could be something you just haven't considered in long time and now that you have given yourself a break from thinking about it, you have gained a fresh sense of interest in it again.
This can happen when i want to be completely be certain of something, I find it's best to give it some distance and time before it's possible to gain better clarity on it. Sometimes it is possible to get so absorbed in something that I end up losing sight of everything else, and that just defeats the purpose of trying to understand it to begin with. Since the aim of anything I want to study should be to enhance my life and not the opposite, because we all know where the hamster wheel goes...nowhere or is it now here? In this instance I picture the snake eating its own tail, the resemblance of a never ending circle of life that takes us back into the present moment at every possible opportunity.
From the past we are moulded to this moment and with it the future also stems from here as well.
So when we have our chart in its most accurate form we can see ourselves or the person at hand to the utmost, with their past and future encompassing all of who they are as a person living in awareness of just that. Exactly who they are.