While you won’t be able to determine your ascendant or any of the houses within your birth chart since that’s structured around your exact moment of birth, you will be able to see what signs the other planets are occupying and how those planets relate to one another through aspects (more on that later).
If you simply can’t access your time of arrival, you’re not totally out of luck. You can set your time of birth to sunrise on the day you were born. While you won’t be able to determine your ascendant or any of the houses within your birth chart since that’s structured around your exact moment of birth, you will be able to see what signs the other planets are occupying and how those planets relate to one another through aspects (more on that later).