3rd house synastry

In 3rd house synastry, the house describes how you and the other person talk, learn, share small daily exchanges, and deal with siblings, neighbours, and nearby places.

Cadent house · communication, siblings, short trips

When the other person's planet falls in your 3rd house, it shapes how they enter these parts of your life: their words, questions, plans, or reactions become more noticeable in your everyday contact. The house is yours; the planet belongs to the other person. This cadent house brings attention to how you adjust to one another through ordinary conversation and shared errands. Its influence can feel easy, lively, or more demanding depending on the planet and how you both respond.

Check your own charts

The 3rd house: a narrow lane with a signpost at a fork, the teal and coral threads taking one branch each

The question this overlay asks

How does their planet affect the way you talk, learn and deal with people nearby when it falls here?

Their planets in your 3rd house

A planet of the other person lands in this house of your chart and brings its own errand. The ten planets, from the Sun to Pluto:

Their Sun in your 3rd house

The other person wants their ideas and plans to be taken seriously in your 3rd house. The Sun brings pride and warmth to everyday talk, though brushed-off suggestions can make them stubborn or eager to have the final say.

Their Moon in your 3rd house

Everyday messages can feel personal when the other person's Moon falls in your 3rd house. They notice your tone, share small worries, and show care through check-ins, yet tiredness can make them go quiet or seek reassurance.

Their Mercury in your 3rd house

In your 3rd house, Mercury keeps conversation moving through questions, texts, jokes, and explanations. The other person wants to talk problems through and notices small details, but can get frustrated when their meaning is missed.

Their Venus in your 3rd house

Small daily exchanges take on a warmer tone with the other person's Venus in your 3rd house. They show affection with a kind message or compliment and like conversation to stay pleasant, though smoothing things over can leave a real disagreement unspoken.

Their Mars in your 3rd house

You notice the other person speak up quickly in your 3rd house, especially when plans or opinions clash. Mars makes them direct and competitive in conversation; a sharp exchange can flare, then pass as quickly as it began.

Their Jupiter in your 3rd house

Jupiter makes the other person generous with ideas, encouragement, and advice in your 3rd house. They may turn a short trip into a bigger plan or say yes before checking the details, bringing optimism along with a tendency to overdo it.

Their Saturn in your 3rd house

The other person wants clear terms and dependable communication in your 3rd house. Saturn can make them careful with words, serious about plans, and slow to open up; their practical reliability helps, though corrections can sound critical.

Their Uranus in your 3rd house

You may find ordinary plans change suddenly when the other person's Uranus falls in your 3rd house. They bring unusual ideas and break routines easily, which can make conversation lively but less predictable when you were counting on a set plan.

Their Neptune in your 3rd house

In your 3rd house, Neptune softens the other person's words and makes conversation feel intuitive or imaginative. They see the best in what you say, yet vague messages or unconfirmed plans can leave both of you guessing.

Their Pluto in your 3rd house

Everyday talk can feel unusually intense with the other person's Pluto in your 3rd house. They press for honesty and notice what is left unsaid; that depth can bring hidden concerns into view, but control or suspicion can weigh on small exchanges.

Check your own charts for the 3rd house

Enter two birthdays to see which planets of each person fall in the other's 3rd house.

APerson A

What you type is never sent.

Moscow, Russia. Time zone: Europe/Moscow.

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A label for the result. It is never sent and never put in a link.

My town is not listed

For example 48.86, 2.35. Copy them from any map.

BPerson B

What you type is never sent.

New York, USA. Time zone: America/New_York.

More options

A label for the result. It is never sent and never put in a link.

My town is not listed

For example 48.86, 2.35. Copy them from any map.

The sample couple in the 3rd house

  • B’s 3rd house holds A’s Uranus.

  • A’s 3rd house holds B’s Mars, Saturn, Uranus and Neptune.

Synastry resultSample couple

Person A Sep 29, 1990, 08:30Person B Mar 14, 1988, 19:10

Two invented people, not real ones. Enter your own birth details above and press the button to replace this result.

38 aspects between the two charts: 15 harmonious and 23 challenging.

The two charts as threads

Person A on the left, person B on the right. Each thread joins a point of A to a point of B. Tap a thread or a planet to read it.

  • Harmonious
  • Challenging
  • Thicker is tighter
  • Conjunction
  • Sextile
  • Square
  • Trine
  • Opposition

How to read it

  • Harmonious solid thread, round badge. The two planets ease each other.
  • Challenging dashed thread, diamond badge. Friction that asks for effort.
  • Thicker is tighter. The width of a thread shows how close the aspect is to exact.
  • Conjunction
  • Sextile
  • Square
  • Trine
  • Opposition

14 tightest of 38 links

Tap a thread or a planet

The tightest link is A’s Mars trine B’s Moon, orb 0°13′. Tap it, or any planet, to read what it means.

All aspects38 found

Every aspect found between the two charts, tightest first. Orb is the distance from the exact angle.

Aspects between the two charts, tightest first
No.Person AAspectPerson BOrbNature
1MarsAHarmoniousMoonB0°13′Harmonious
2VenusAChallengingSunB2°28′Challenging
3AscendantAChallengingMarsB0°36′Challenging
4MarsAHarmoniousAscendantB2°28′Harmonious
5SunAHarmoniousMoonB5°53′Harmonious
6SunAHarmoniousAscendantB3°12′Harmonious
7MoonAHarmoniousSunB4°38′Harmonious
8AscendantAHarmoniousMoonB3°31′Harmonious
9MidheavenAHarmoniousSunB3°33′Harmonious
10JupiterAChallengingVenusB1°30′Challenging
11SunAChallengingMidheavenB4°37′Challenging
12MoonAChallengingJupiterB2°05′Challenging
13MercuryAChallengingSunB5°19′Challenging
14MercuryAHarmoniousMarsB4°46′Harmonious
15JupiterAHarmoniousAscendantB0°59′Harmonious
16JupiterAChallengingMoonB3°40′Challenging
17SunAChallengingSaturnB3°50′Challenging
18North NodeAChallengingVenusB4°02′Challenging
19VenusAChallengingNorth NodeB4°05′Challenging
20SaturnAChallengingMarsB4°10′Challenging
21AscendantAChallengingMidheavenB4°46′Challenging
22VenusAChallengingSaturnB4°51′Challenging
23North NodeAHarmoniousAscendantB3°30′Harmonious
24MidheavenAHarmoniousNorth NodeB1°56′Harmonious
25North NodeAHarmoniousMoonB6°11′Harmonious
26PlutoAHarmoniousMarsB1°34′Harmonious
27NeptuneAHarmoniousVenusB2°19′Harmonious
28NeptuneAChallengingMarsB2°45′Challenging
29MercuryAChallengingNorth NodeB3°43′Challenging
30SunAChallengingNeptuneB4°13′Challenging
31PlutoAChallengingMoonB4°28′Challenging
32VenusAChallengingUranusB3°46′Challenging
33UranusAHarmoniousVenusB3°49′Harmonious
34SunAChallengingUranusB4°55′Challenging
35NeptuneAChallengingMidheavenB1°24′Challenging
36NeptuneAChallengingAscendantB2°50′Challenging
37UranusAChallengingAscendantB3°17′Challenging
38North NodeAChallengingJupiterB4°07′Challenging

House overlaysPlacidus

The house of one person’s chart in which each point of the other falls.

Direction of the overlay

A A’s points in B’s houses

A’s points in B’s houses
HouseCuspA’s points
1Lib 8°
  • Ascendant
2Sco 5°
  • Pluto
3Sag 6°
  • Uranus
4Cap 10°
  • Moon
  • Saturn
  • Neptune
  • North Node
5Aqu 13°empty
6Pis 13°empty
7Ari 8°empty
8Tau 5°empty
9Gem 6°
  • Mars
10Can 10°
  • Jupiter
  • Midheaven
11Leo 13°empty
12Vir 13°
  • Sun
  • Mercury
  • Venus

Sun, Mercury and Venus fall together in B’s 12th house. Moon, Saturn, Neptune and North Node fall together in B’s 4th house.

B B’s points in A’s houses

B’s points in A’s houses
HouseCuspB’s points
1Lib 15°empty
2Sco 9°
  • Pluto
3Sag 12°
  • Mars
  • Saturn
  • Uranus
  • Neptune
4Cap 21°
  • Moon
5Aqu 26°
  • Mercury
  • North Node
6Pis 24°
  • Sun
7Ari 15°
  • Venus
  • Jupiter
8Tau 9°empty
9Gem 12°
  • Midheaven
10Can 21°empty
11Leo 26°empty
12Vir 24°
  • Ascendant

Mars, Saturn, Uranus and Neptune fall together in A’s 3rd house.

The same pair as a wheelBi-wheel

Person A on the inner ring, person B on the outer ring, the tightest aspects as lines across the middle. Tap a planet or a line. The table under the wheel lists the positions it is drawn from.

AriTauGemCanLeoVirLibScoSagCapAquPis
  • AInner ring: Person A
  • BOuter ring: Person B

Tap a thread or a planet

The tightest link is A’s Mars trine B’s Moon, orb 0°13′. Tap it, or any planet, to read what it means.

Positions as a table
Positions of the two charts
PointA AB B
SunLib 5°47′Pis 24°38′
MoonCap 29°16′Aqu 11°39′
MercuryVir 19°19′Aqu 28°12′
VenusVir 27°06′Tau 9°30′
MarsGem 11°26′Cap 14°34′
JupiterLeo 8°00′Tau 1°21′
SaturnCap 18°44′Cap 1°57′
UranusCap 5°42′Cap 0°52′
NeptuneCap 11°48′Cap 9°59′
PlutoSco 16°07′Sco 12°20′ R
North NodeAqu 5°28′ RPis 23°01′
AscendantLib 15°10′Lib 8°59′
MidheavenCan 21°05′Can 10°24′

An orb is the distance, in degrees and minutes, between an aspect and its exact angle. A tight orb is a strong contact; each aspect has its own largest orb.

See the composite chart of the sample couple