Which lines should I look at first on an astrocartography map?

Start with the lines of the planets that are strongest in your natal chart: the ruler of your Ascendant, the Sun and Moon, and any planet close to an angle at birth. Their lines tend to describe the most noticeable changes when you move.

Why are some astrocartography lines straight and others curved?

MC and IC lines mark where a planet was on the meridian, and meridians run straight from pole to pole. AC and DC lines mark where the planet was on the horizon, and the horizon's position depends on latitude, so those lines curve.

How far away from a line is too far?

Conventions vary. Many astrologers treat the first 100–200 km as strong and up to about 600–700 km as noticeable. Beyond that, a single line is usually background, unless several lines point to the same theme.

Can two nearby cities have very different astrocartography?

Along an MC or IC line, cities at the same longitude share the line, even if they are far apart north to south. Cities at the same latitude but different longitudes can differ a lot. AC and DC curves and parans also add north-south differences.

Is there one line that means I should move somewhere?

No single line is a reason to move. Treat the map as a way to compare options you are already considering, alongside work, cost of living, language and the people you want nearby.

How to Read an Astrocartography Map, Step by Step

September 30, 20265 min read

To read an astrocartography map, first confirm your birth time, then decide which planets matter most in your natal chart. Find the lines of those planets near the region you care about, measure the real distance from each city to each line, and read every line as planet plus angle: MC for career, IC for home, AC for self, DC for partners. Finally, check crossings and confirm with a relocation chart.

Before you open the map

An astrocartography map is only as accurate as the data behind it. Before looking at a single line, check three things:

Exact birth time from a document. A certificate or hospital record beats family memory. Every 4 minutes of error shifts every line by about 1° of longitude.
Birthplace. The town of birth, not where your parents lived. The place matters less for the lines than the time does, but it matters for the natal chart you will compare against.
Historical time zone. Many charts for people born in Ukraine and the former USSR are wrong because local clocks followed Moscow time for decades and Soviet summer time only began in 1981. A good chart engine applies these rules automatically. If you are not sure, check that your natal chart shows the Ascendant you expect before trusting the map.

Step 1: Decide which planets matter to you

It is tempting to hunt for Venus and Jupiter lines straight away. A better start is your natal chart. Ask:

Which planet rules my Ascendant? Its lines often feel personal.
Which planets were close to an angle at birth? They are already loud in your life.
What do my Sun and Moon need? Their lines touch identity and emotional wellbeing.
Which planets are under pressure, for example tightly squared by Saturn or Pluto? Their lines may bring that tension to the surface.

Write down three to five planets. Those are the lines you will actually read. The others are background.

Step 2: Learn to recognise the four line types

Schematic, not to scale. MC and IC lines are straight meridians; AC and DC lines are curves. Most map services use a different colour per planet and a different dash style per angle.

Each angle points the planet at a different part of life:

Line	Shape	Life area it colours
MC	Straight, north-south	Career, reputation, public role, what you are known for
IC	Straight, north-south	Home, family, roots, inner security, property
AC	Curved	Self-image, body, energy, how people first see you
DC	Curved	Partners, clients, close one-to-one relationships

Step 3: Zoom in and measure real distances

A world map exaggerates or hides distance, especially far from the equator. Zoom into the region you care about and measure. For MC and IC lines the east-west distance is simple arithmetic: find the difference in longitude between the city and the line, then multiply by the kilometres per degree at that latitude.

Latitude	1° of longitude	Example cities
40°N	about 85 km	Madrid, Naples
50°N	about 72 km	Kyiv, Kraków, Prague
52°N	about 69 km	Warsaw, Berlin, Amsterdam
60°N	about 56 km	Oslo, Helsinki

For AC and DC curves, use the map's own distance tool if it has one, because the curve's position changes with latitude.

Step 4: Read planet plus angle

Now combine. A Jupiter MC line is Jupiter's growth and opportunity pointed at career. A Moon IC line is the Moon's need for belonging pointed at home, which people often describe as a place that feels like home quickly. A Mars DC line is Mars's drive pointed at partnerships: energising, but prone to arguments.

Always read the downside too. A Neptune AC line can bring artistic inspiration and also make it harder to stay grounded. A Venus MC line can bring charm at work and also a temptation to coast.

Then check the planet's condition in your natal chart. A Venus under heavy pressure at birth does not become simple on its line; its themes become more visible, for better and for worse.

Step 5: Look for clusters and crossings

One line on its own is a hint. Several lines near the same city, or two lines that repeat the same theme, are a stronger signal. Look especially at:

Clusters. Two or three lines within a few hundred kilometres of each other.
Crossings and parans. Where two lines cross, the two planets were angular at the same moment. The latitude of the crossing is called a paran latitude, and many astrologers read it as active along the whole latitude band, not just at the crossing.

A worked example

Consider Marta, a hypothetical client born in Lviv, who wants to work in Central Europe for a few years. Her natal Jupiter is strong, so she asks where its lines fall. Suppose her Jupiter MC line runs at about 17°E.

Hypothetical example: a Jupiter MC line at about 17°E, with a shaded band of 2° either side. Wrocław sits almost on the line and Vienna is inside the band; Prague is just outside it, while Warsaw and Kyiv are well outside.

Wrocław, at about 17.0°E, is within a few kilometres of the line. Vienna, at 16.4°E, is roughly 45 km to the west in longitude terms. Prague, at 14.4°E, is about 185 km away and still in the strong-to-noticeable range. Warsaw, at 21.0°E, is about 275 km east. Because the line is a meridian, the same line also crosses Scandinavia to the north and the Adriatic to the south.

Marta's next step is not to book a flat in Wrocław. It is to check what else is near those cities, and to build relocation charts for the two or three that also make practical sense. That is the subject of Relocation Chart: What Changes When You Move.

Common mistakes

Trusting an unverified birth time. A 30-minute error moves every line about 500 km in Central Europe.
Reading only the pleasant lines. Every planet has a shadow side, and every city has more than one line near it.
Treating a line as a border. Influence fades gradually. A city 50 km from a line and one 80 km away are not in different worlds.
Ignoring the natal chart. The same line means different things for different people.
Deciding on the map alone. Jobs, visas, rent, language and people matter at least as much.

For the bigger picture, return to the astrocartography guide.

Key takeaways

Read your natal chart before the map: a line is only as helpful as the planet that draws it.
Measure distance in kilometres, not by eye. One degree of longitude is about 85 km at 40°N, 72 km at 50°N and 56 km at 60°N.
Straight lines are MC and IC; curved lines are AC and DC. The angle tells you which area of life the planet will colour.
Clusters of several lines and paran latitudes carry more weight than one isolated line.
Confirm any promising city with a relocation chart before treating it as a serious option.