Sun-Sun synastry aspects
The Sun shows the sense of self each person brings to a relationship; in synastry, a link between the two Suns shows how they make room for each other's confidence, pride, and wish to be seen.
A may take the lead or want recognition, while B does the same in their own way. When either feels brushed aside, they can grow stubborn; when appreciated, both are warm and generous. The contact can feel like shared purpose, friendly support, a recurring clash, easy agreement, or a pull between different approaches. Which aspect it is and how close it is shape the feel, from a strong blend to a more noticeable push and pull.
What Sun stands for
The two planets of this page, and what each one stands for between two people.
Sunsense of self
The sense of self each person brings, and whether the other makes room for it.
Sun and Sun, aspect by aspect
An aspect is the angle between a planet in one chart and a planet in the other. A pair of two different planets reads in two directions, so each aspect is written both ways.
Sun-Sun ConjunctionHarmonious
Either person's Sun with the other person's Sun
One wants to set the dinner plan, the other has already picked a place; a conjunction puts one Sun right on top of the other. A and B often take pride in similar things and respond warmly when the other notices their effort. Their goals can feel shared, yet each still wants a say in what gets attention.
Sun-Sun SextileHarmonious
Either person's Sun with the other person's Sun
To a friend watching, A and B look quick to cheer each other on; inside, the opening takes a first step. A sextile from one Sun to the other makes it easier to respect what the other wants to be known for. One person might praise a new idea, and the other then feels more ready to take the lead.
Sun-Sun SquareChallenging
Either person's Sun with the other person's Sun
With a square, each Sun gets straight to competing priorities: A wants a decision now, and B presses for a different plan. Each can feel overlooked when the other takes charge. The same argument may return, but the push also gets both people to state what matters and move from talk to action.
Sun-Sun TrineHarmonious
Either person's Sun with the other person's Sun
Comfort comes easily. A quiet Sunday morning can pass with A and B choosing the same pace without a long discussion. A trine linking each Sun with the other supports natural agreement and mutual confidence, so each person feels free to show up as themselves. Because it asks little effort, that ease can simply fade into the background.
Sun-Sun OppositionChallenging
Either person's Sun with the other person's Sun
A wants the final say on a shared choice, and B responds by making a case for another route. An opposition sets each Sun facing its counterpart, creating both interest and strain. A and B can spot qualities in the other that they hold back in themselves, then adjust who leads as the moment changes.
How often two birthdays make Sun-Sun aspects
Counted with this site's own engine: 600 random birthdays from 1950 to 2010, and every ordered pair of them (359,400 pairs), with the orbs of the Methodology page. It tells how common a contact is among random pairs of birthdays and nothing about people. Counted November 10, 2026.
| Aspect | Orb | Random pairs | About 1 in |
|---|---|---|---|
| Conjunction | 8° | 4.4% | 23 |
| Sextile | 6° | 6.7% | 15 |
| Square | 8° | 8.9% | 11 |
| Trine | 8° | 9.0% | 11 |
| Opposition | 8° | 4.4% | 23 |
| Any of the five | – | 33% | 3 |
Check your own charts for Sun and Sun
Enter two birthdays to see whether, and how closely, these two planets touch in your charts, in both directions.
Sun and Sun in the sample couple
Sun of A and Sun of B: no aspect within the orbs.
These two points do not link directly in this couple, so what this pair describes is not part of how their charts meet.
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.
Strongest links6 tightest
MarsATrineMoonB
Person A's Mars trine Person B's Moon brings a relaxed rhythm between initiative and the comfort that helps the other person unwind.
VenusAOppositionSunB
The pull is appealing and awkward: Person A's Venus opposite Person B's Sun can leave A admiring B while wanting a softer response.
AscendantASquareMarsB
A’s first impression in square with B’s drive and desire: the two pull in different directions, creating friction that pushes both people to act.
MarsATrineAscendantB
A’s drive and desire in trine with B’s first impression: the two flow together with little effort, which feels natural and easy to take for granted.
SunATrineMoonB
Person A's Sun trine Person B's Moon often helps B settle around A's self-assurance, with care and appreciation passing between them naturally.
SunAConjunctionAscendantB
A’s sense of self in conjunction with B’s first impression: the two sit side by side, so their qualities blend into one.
All aspects38 found
Every aspect found between the two charts, tightest first. Orb is the distance from the exact angle.
| No. | Person A | Aspect | Person B | Orb | Nature |
|---|---|---|---|---|---|
| 1 | MarsA | Harmonious | MoonB | 0°13′ | Harmonious |
| 2 | VenusA | Challenging | SunB | 2°28′ | Challenging |
| 3 | AscendantA | Challenging | MarsB | 0°36′ | Challenging |
| 4 | MarsA | Harmonious | AscendantB | 2°28′ | Harmonious |
| 5 | SunA | Harmonious | MoonB | 5°53′ | Harmonious |
| 6 | SunA | Harmonious | AscendantB | 3°12′ | Harmonious |
| 7 | MoonA | Harmonious | SunB | 4°38′ | Harmonious |
| 8 | AscendantA | Harmonious | MoonB | 3°31′ | Harmonious |
| 9 | MidheavenA | Harmonious | SunB | 3°33′ | Harmonious |
| 10 | JupiterA | Challenging | VenusB | 1°30′ | Challenging |
| 11 | SunA | Challenging | MidheavenB | 4°37′ | Challenging |
| 12 | MoonA | Challenging | JupiterB | 2°05′ | Challenging |
| 13 | MercuryA | Challenging | SunB | 5°19′ | Challenging |
| 14 | MercuryA | Harmonious | MarsB | 4°46′ | Harmonious |
| 15 | JupiterA | Harmonious | AscendantB | 0°59′ | Harmonious |
| 16 | JupiterA | Challenging | MoonB | 3°40′ | Challenging |
| 17 | SunA | Challenging | SaturnB | 3°50′ | Challenging |
| 18 | North NodeA | Challenging | VenusB | 4°02′ | Challenging |
| 19 | VenusA | Challenging | North NodeB | 4°05′ | Challenging |
| 20 | SaturnA | Challenging | MarsB | 4°10′ | Challenging |
| 21 | AscendantA | Challenging | MidheavenB | 4°46′ | Challenging |
| 22 | VenusA | Challenging | SaturnB | 4°51′ | Challenging |
| 23 | North NodeA | Harmonious | AscendantB | 3°30′ | Harmonious |
| 24 | MidheavenA | Harmonious | North NodeB | 1°56′ | Harmonious |
| 25 | North NodeA | Harmonious | MoonB | 6°11′ | Harmonious |
| 26 | PlutoA | Harmonious | MarsB | 1°34′ | Harmonious |
| 27 | NeptuneA | Harmonious | VenusB | 2°19′ | Harmonious |
| 28 | NeptuneA | Challenging | MarsB | 2°45′ | Challenging |
| 29 | MercuryA | Challenging | North NodeB | 3°43′ | Challenging |
| 30 | SunA | Challenging | NeptuneB | 4°13′ | Challenging |
| 31 | PlutoA | Challenging | MoonB | 4°28′ | Challenging |
| 32 | VenusA | Challenging | UranusB | 3°46′ | Challenging |
| 33 | UranusA | Harmonious | VenusB | 3°49′ | Harmonious |
| 34 | SunA | Challenging | UranusB | 4°55′ | Challenging |
| 35 | NeptuneA | Challenging | MidheavenB | 1°24′ | Challenging |
| 36 | NeptuneA | Challenging | AscendantB | 2°50′ | Challenging |
| 37 | UranusA | Challenging | AscendantB | 3°17′ | Challenging |
| 38 | North NodeA | Challenging | JupiterB | 4°07′ | Challenging |
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.
- 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
| Point | A A | B B |
|---|---|---|
| Sun | Lib 5°47′ | Pis 24°38′ |
| Moon | Cap 29°16′ | Aqu 11°39′ |
| Mercury | Vir 19°19′ | Aqu 28°12′ |
| Venus | Vir 27°06′ | Tau 9°30′ |
| Mars | Gem 11°26′ | Cap 14°34′ |
| Jupiter | Leo 8°00′ | Tau 1°21′ |
| Saturn | Cap 18°44′ | Cap 1°57′ |
| Uranus | Cap 5°42′ | Cap 0°52′ |
| Neptune | Cap 11°48′ | Cap 9°59′ |
| Pluto | Sco 16°07′ | Sco 12°20′ R |
| North Node | Aqu 5°28′ R | Pis 23°01′ |
| Ascendant | Lib 15°10′ | Lib 8°59′ |
| Midheaven | Can 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.
Questions about Sun and Sun
What does Sun conjunct Sun mean in synastry?
A conjunction brings the two people's sense of self close together. They often recognize their own priorities in each other and take similar things seriously. That can make it easy to feel understood, though each person still wants to be noticed in their own right.
Is Sun square Sun bad in synastry?
There is no verdict in a square between the Suns. The friction tends to show up as competing plans, pride, or both people wanting the final say. They might repeat the same disagreement, or use the push to make decisions and get things moving.
What happens when both people have a strong Sun in the same place of the chart?
Two strong Suns tend to notice and encourage each other's confidence, and each person brings a clear sense of what matters. Neither automatically gives way; one may yield on a small choice, then the other takes the lead later. They have self-belief and a wish to be taken seriously in common.
How close does Sun square Sun need to be?
For Sun and Sun, a sextile counts up to 6 degrees, while a conjunction, square, trine, or opposition counts up to 8 degrees. A tight link makes the shared pride or clash more immediate; a wide one is easier to miss in ordinary moments.
How common is Sun conjunct Sun in synastry?
Among 600 random birthdays from 1950 to 2010, about 4 in 100 pairs have a Sun conjunction, and about 33 in 100 have any of the five Sun aspects. These shares come from the 359,400 birthday pairs compared.