Honest answers

My chart looks different on another site. Why?

If you've run your chart on two sites and gotten two different answers, you're not imagining it — and neither site is necessarily wrong. Here's what's actually going on.

Four reasons charts disagree

• Different star tables. Every calculator converts your birth moment into planetary positions using an ephemeris — a table of where the planets were. Sites use slightly different tables, and tiny positional differences can flip a gate near a boundary.
• Time-zone databases. Your chart is calculated twice: once for your birth moment, and once for the Design date about three months before birth. An outdated or mismatched time-zone database — especially for the Design date — shifts everything by an hour or more.
• Birth-time defaults. Don't know your birth time? Sites handle that differently: some silently default to midnight, some to noon, some refuse to calculate at all. We read it for noon and say so plainly — no shame, no guessing games.
• Gate boundaries. Gates change as the planets move — the Moon moves fast, the Sun about one gate every six days. If you were born near a boundary, even a small calculation difference can light a different gate.

So which one is right?

The honest answer: if the big pieces match — your type, your authority, most of your centers — the differences are edge details. Human Design is an experiment you live, not a lab result. The experiment doesn't live or die on one gate.

If two sites give you completely different types, that's worth a closer look — check that both used the right birth date, time, and place. Nine times out of ten, that's the whole mystery.

What we do here

Our chart calculator is RoxyAPI, a third-party service — your details go straight to the chart service to calculate and are never stored on our servers. If you leave the birth time blank, we read noon and tell you. And if you already know your chart, you can skip the calculator entirely and mark each center yourself: tap once for colored, twice for white.

Human Design is a tool for self-reflection. Nothing here is medical, psychological, or financial advice.