Which Human Design Chart to Use
This site draws five kinds of charts and two tables. They all start from the positions of the Sun, the Moon and the planets, and each one answers a different question.
Birth Chart
The Birth Chart shows how a person is built, calculated from the date, the time and the place of birth. It's the chart to start with, and it shows the Type, Authority, Profile, Definition, Incarnation Cross, centers, channels and Variables. The time of birth matters, since even a few minutes can move a planet into another line, and the Variables need it accurate to a few minutes.
Connection Chart
The Connection Chart puts two birth charts together and shows how they meet, with the channels the two people complete between them, the ones they share and the ones that only one of them brings. It's useful to look at a relationship, a friendship or people working together.
Transit Chart
The Transit Chart shows where the planets are at any moment, now unless another moment is chosen, and the gates, channels and centers that they activate for everyone. It's useful to see the general mood of a day, or to look at a moment in the past or in the future.
Birth Transit Chart
The Birth Transit Chart puts the planets of a moment on top of a birth chart, and shows the channels that the transits complete with it and the open centers they define for a while. It's useful to see how a day, a week or a longer period touches a particular person.
Connection Transit Chart
The Connection Transit Chart puts the planets of a moment on top of the connection chart of two people, and shows the channels that the transits complete for them together. It's useful to see how a day, a week or a longer period touches a relationship.
Transits by Month
Transits by Month is a table of the gate and line of every planet over a month, with a row for each day, where the gate and line of a planet are only written when they change. It's useful to see ahead when a planet moves into a new gate or line, especially the slower planets that stay in one for a long time.
Transits by Day
Transits by Day is the same table over a single day, with a row for each hour. It mostly follows the Moon, which moves into a new line every couple of hours and into a new gate about every ten hours.