Free Astrocartography Map

What the lines actually show

Every planet in your birth chart occupies a longitude on the sky at the moment you were born, and that longitude crosses the horizon or the meridian at a different point on Earth for every degree of longitude on the ground. Astrocartography plots those crossing points as continuous lines running from pole to pole: one line for every planet at the Ascendant, one at the Descendant, one at the Midheaven, and one at the IC.

Stand on one of those lines, even far from where you were actually born, and that planet behaves the way it would if it were angular in your natal chart: rising, setting, culminating, or anchoring the sky beneath you. The lines are a property of your birth moment, not of any single place, so they exist everywhere on Earth at once.

Reading the four line types

An Ascendant line marks where a planet was rising at your birth moment, and living or traveling along it tends to bring that planet's themes into how you present yourself and how others meet you. A Descendant line does the same for relationships and partnerships, since it marks where the planet was setting.

A Midheaven line marks where a planet was at its highest point, directly overhead, and is tied to career, public reputation, and direction. An IC line marks the opposite point, the lowest and most private part of the sky, and is tied to home, family, and your inner foundation.

Solid and dashed lines on this map distinguish the pairs: Ascendant and Midheaven lines behave one way, Descendant and IC lines the other, since each pair traces one half of the same axis.

Why this needs your actual birth time

Astrocartography lines depend on where the Ascendant and Midheaven were at your exact birth moment, and both shift by roughly one degree of longitude for every four minutes of clock time. A birth time that is off by even twenty or thirty minutes moves every line on this map, sometimes by a noticeable distance on the ground.

If your birth time is unknown or only estimated, treat the lines this calculator draws as approximate at best, and rely on the technique to test general themes rather than to plan a move around a specific line's exact path.

Astrocartography versus local space

Astrocartography lines are a property of your birth moment alone; they run the same way regardless of where you were actually born. Local space lines start from your birth location and radiate outward as compass directions, so moving your birthplace changes every local space line even if your birth moment stays fixed.

The two techniques answer related but different questions. Astrocartography tells you which places on Earth put a given planet on an angle. Local space tells you which direction from home to travel to lean into a given planet.

Using a dropped pin

Click anywhere on the map to see the full relocated chart for that point: the same birth moment, recast for a different location, complete with its own Ascendant, Midheaven, houses, and the aspects between your planets. The "what's strong here" panel shows which planets land closest to an angle at that spot, so you can compare places without recasting a chart by hand for each one.

Where the technique comes from

Astrocartography was developed by astrologer Jim Lewis in the 1970s, building on the older idea of relocation astrology by mapping every planetary line at once instead of recasting a chart one city at a time. It remains one of the few forecasting techniques built specifically around location rather than time.