What is a birth chart?
A map of the sky at the moment and place you were born, drawn as a circle with the eastern horizon on the left. Everything else on this page is a detail of that one picture: where each planet was, which part of the sky it sat in, and the angles between them. It is calculated, not interpreted; two people with the same birth details get the same chart from any astrologer alive.
Where you see this in OrbHeaven
Your own chart is calculated from your birth details, and this definition is written out again there with your numbers in it rather than in the abstract. The chart, the glossary and thirty days of dated timeline are free, and nothing here is charged per question.
About a minute. Birth time optional, and no account until after you have seen it.
The chart
What the picture is, and what the numbers on it are measuring.