For an accurate chart, you need as accurate and down-to-the-minute a birth time as possible. Big parts of your chart can change in a minute, depending on your chart itself, so unfortunately simply knowing the day or general time of that day could give you a very different chart than you actually have.

If you know your birthday, you can start to figure out which parts of your chart are accurate by putting in 12:00am as the birth time, and then 11:59pm as the birth time, and comparing the two. See which aspects have remained the same and you will know that those parts are in your true design.

If you have a general idea of the time, I would still recommend doing the above, but you can do it in smaller segments closer to that time as well.

Human Design uses your birth time according to UTC (Coordinated Standard Time) to calculate your chart – your location tells us which timezone you were born in, so the chart generator can calculate the right time based on that.

That’s okay! Just pick the next closest place that’s in the same time zone.