Sun Conjunct Sun

Sun conjunct Sun is identity meeting identity. When the Sun of one chart sits on the Sun of another, or the transiting Sun returns to your natal Sun, the core self is amplified and mirrored. This is not subtle: it boosts visibility, confidence, and willpower, and it puts ego dynamics on the table—supportive when owned, combustible when not. In synastry, it feels like instant recognition, as if you “get” each other’s life force. In transits, it’s your yearly recharge—your true new year. Out-of-sign conjunctions still work, but they mix two different styles of self-expression. Because this is a conjunction, it fuses—not negotiates—so the result is bright and undeniable for better or for friction.

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Quick take

Theme: identity alignment, vitality surge, mutual recognition.
Synastry: same spotlight—supportive synergy or ego competition.
Transit: birthday reset; set intentions, start fresh, be seen.
Orb guide: tight (0–3°) powerful; moderate (3–6°) strong; wide (6–8°) workable if supported.
Out-of-sign? Still a conjunction—different flavor, same fuse.

Aspect: Conjunction Luminary ↔ Luminary Power: High

Where you’ll actually see Sun conjunct Sun

Synastry: two people born on the same day (or within a few degrees), their Suns align.
Transit: once a year when the Sun returns to your natal Sun (your birthday/solar return).
Event charts: launching something on, or very near, your Sun degree imprints it with your signature.

Want the exact degree? Pull your chart on the Birth Chart hub and note your Sun’s sign, degree, and house.

Synastry: when your Sun meets their Sun

Two Suns together are bright and simple: like recognizes like. The core needs are similar, so the pair rallies around the same goals and styles of living. The growth edge is managing pride and making room for two “leads” on one stage.

How it feels

Instant rapport and shared identity story (“we’re the same kind of person”).
Mutual visibility—each elevates the other’s presence and confidence.
Shadow: competitiveness, stubborn “my way is the way,” or spotlight tug-of-war.

Orb and exactness

0–1°: blazing. Life paths feel intertwined; small ego slights can sting large.
1–3°: strong alignment with healthy space for individuality.
3–6°: supportive background hum; other aspects decide the plot.
6–8°: workable only if reinforced by tighter aspects (e.g., Sun trine Moon). See trine.
Out-of-sign (e.g., 29° Leo with 1° Virgo): still conjunct, but you blend showmanship with craft—same beam, different color temperature.

House overlays (why it matters)

Where one person’s Sun lands in the other’s chart shows where the light focuses. Read the host house meaning to aim the energy.

1st house: you amplify their identity; visibility duo. See House 1.
7th house: partnership becomes a life-defining theme; commitment spotlight. See House 7.
10th house: public image and career glow; do things that can be seen. See House 10.
4th house: private axis—home, family, foundational decisions. See House 4.

Sign flavor (quick cues)

Fire Suns together (Aries/Leo/Sag): fast, bold, prideful—keep score with action.
Earth Suns (Taurus/Virgo/Cap): productive, standards-driven—respect competence.
Air Suns (Gemini/Libra/Aquarius): social, idea-forward—debate is foreplay.
Water Suns (Cancer/Scorpio/Pisces): protective, feeling-led—trust is the engine.

Do this, avoid that

Do: split leadership by domain (you lead X, I lead Y).
Do: celebrate wins publicly; correct missteps privately.
Avoid: treating agreement as love. Respect distinct methods even with shared goals.
Avoid: piling other hard Solar aspects (e.g., Sun square Mars) without guardrails. See square and Mars.

Exploring broader pairing patterns? Visit the Compatibility hub.

Transit Sun conjunct natal Sun (your birthday reset)

This is your solar return moment: a fresh circuit of purpose and vitality. The Sun moves ~1°/day, so you feel the build 1–2 days before exact and after.

Window: potent ±1 day; workable intentions within a 3–5 day bubble.
Best uses: define a theme for the year, set one visible goal, begin habits you want to stick.
Watch for: overpromising; the ego writes checks your schedule can’t cash.

Turn it into action

Mark the exact degree and minute from your chart on the Birth Chart hub; time your intention or launch within an hour of exact, if possible.
Do one thing publicly (announce, publish, apply). Sun likes to be seen.
Choose a house theme: if your Sun is in the 2nd, set an income metric; 9th, pick a learning/teaching milestone. Browse House 2 and House 9.

Technical notes and edge cases

Orbs: keep synastry within 6° for reliability; transit is effectively exact-day.
Declination: Sun’s declination is constrained; latitude doesn’t make or break this aspect.
Out-of-sign: still valid; tone is mixed (e.g., Leo confidence + Virgo precision).
Daylight birthdays: your “exact” return can be the day before/after the calendar birthday; use degrees, not the cake.
Reinforcers: A Sun trine or sextile to the other person’s Moon or Venus stabilizes ego heat. See sextile and Venus.

Make it real: checklists

Synastry checklist

Degree gap between Suns: ____° (0–3° is fierce).
House overlay of partner’s Sun in your chart: ______.
Supportive cross-aspects to Moons/Venus/Mars: note them.
Plan domains of leadership each will own.

Transit (birthday) checklist

Exact return date/time: ______ (local time).
One-year headline (short, measurable): ______.
Public action you’ll take within 24 hours: ______.
House-based theme to track monthly: ______. See Houses.

FAQ

Is Sun conjunct Sun the same as being the same Sun sign?

Often, but not always. Suns can be conjunct across signs if the degrees are close (e.g., 29° Leo with 1° Virgo). Same sign increases stylistic similarity; out-of-sign mixes styles under one beam.

How long does the transit last?

The exact hit is a moment; the felt window is roughly 24–48 hours on either side. Plan your key action within that bubble.

What if our Suns are 7–8° apart?

It’s weak on its own. Treat it as supportive color rather than a defining bond, unless other tight aspects back it up.

Does this exist in a natal chart?

No—your Sun can’t be conjunct itself. You’ll see Sun conjunct Sun in synastry, in timing (transit/solar return), or implied in event choices.

Best houses for Sun-on-Sun synastry?

1st, 7th, and 10th houses tend to be life-shaping. The 4th is potent for building a home/family axis. Start with the house meanings at House 7 and explore others from there.

All aspects overview: Aspects hub
Sun basics: Planet Sun
Conjunctions explained: Conjunction aspect
Explore signs: start with Leo (Sun’s domicile)
Build your chart and timing: Astrology Charts hub