Do transits change my Human Design chart?

No. Your birth chart is calculated from a fixed moment and never changes — your Type, Authority, Profile, and defined centers are permanent. What transits do is temporarily complete channels by supplying a gate you're missing, so a center can behave as if defined for a few hours or days. It's weather passing over a landscape, not a change to the landscape.

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The effect is most noticeable in your open centers. Someone with an undefined Solar Plexus who suddenly has it bridged by a transit will feel an emotional wave that isn't theirs and doesn't repeat — the sort of day where a decision feels urgent for no traceable reason. Knowing it's a transit is what makes it survivable rather than convincing.

This is also the honest limit of transit reading. A transit describes a shared atmosphere; it never tells you what's correct for you. That decision still runs through your own Authority.

Related Questions

Can a transit make me a different Type for a day?
No. Type is derived from your birth chart only. A transit can define a channel temporarily, but the Type it would imply isn't yours and disappears with the transit.
Why do some days feel completely unlike me?
Often a transit is bridging one of your open centers, giving you a temporary experience of energy you don't produce yourself.
Do transits explain long life phases?
The slow planets — Uranus, Neptune, Pluto — sit in a gate for years, so they can color a long stretch, unlike the Moon which moves every few hours.