Article text is currently English only. The calculation below and the rest of the interface follow your chosen language.
In short
The Sun and the Moon share a sign around every new Moon, in 1,711 of 20,000 random birth moments 1950-2050 (8.6 per cent). Saravali Ch. 15 Sl. 2 gives the pair a mixed reading of wealth with dependence on women and trade in intoxicants. This app detects no yoga for it, but marks the Moon combust when it is within 12 degrees of the Sun.
Every month the Moon catches up with the Sun, passes it, and pulls away again. For a little over two days on either side of that meeting the two often stand in the same sign, and a birth then has the Sun and the Moon in one house. On this site that is what a conjunction, or yuti, means: two grahas in the same sign of a whole-sign chart. The engine applies no orb to decide it. This page covers the pair from four angles: how the texts rate the two lights, what Saravali reads into them together, how this app handles the Moon lost in the Sun's glare, and a chart worked through in full. For each graha on its own, see the Sun in Vedic astrology and the Moon in Vedic astrology.
The two lights as the texts describe them
The Sun and the Moon are the only two grahas the classical texts call luminaries, and they are treated as a pair long before any chapter on conjunctions. Each rules a single sign, Leo and Cancer, which sit next to each other. Saravali Ch. 4 Sl. 9 lists the Sun among the natural malefics with Saturn and Mars. The Moon is not fixed: the same sloka counts the waning Moon as a malefic. BPHS Ch. 3 Sl. 11 says the same thing in its own words, naming "decreasing" Candr in the malefic list.
That detail matters here more than for any other pair. A Moon close to the Sun is, by definition, near the end of the waning half or at the very start of the waxing half. The Moon in this conjunction is the thinnest Moon of the month. Whether a reader counts it as benefic or malefic depends on which side of the new Moon the birth falls. This app's engine does not make that distinction. Its BENEFICS list includes the Moon in every chart, so rules that look for a benefic will accept a new Moon as readily as a full one.
On natural friendship, the two are on good terms. Saravali Ch. 4 Sl. 28-29 names the Moon among the Sun's friends and the Sun among the Moon's, and adds that the Moon has no enemies at all. The engine's relationship table copies those lists. So whatever the classical reading of the pair is, it is not a quarrel between hostile grahas. That sets it apart from Sun-Saturn or Sun-Venus, where the Sun counts the other as an enemy.
What the classical texts say about the Sun with the Moon
Saravali Ch. 15 opens by saying the effects of two planets in one house were stated by the Vriddha Yavanas and that Kalyana Varma repeats them. The Sun-Moon line is Sl. 2, the first in the chapter. In this translation the native is at the disposal of his wife or of women, immodest, a metallurgist, quite wealthy, and expert in the sale of intoxicants. The translator notes that the word for metallurgist can also be read as "able to deceive".
It is not a flattering sloka, and it is not a disastrous one either. Wealth appears in it plainly. What the line describes is a person whose living comes from making and trading things, and whose household has the upper hand. Like every line in this chapter, it carries no orb and no condition. A Moon 1 degree from the Sun and a Moon 28 degrees away in the same sign are treated alike.
The chapter ends with a qualifier that applies to every pair. Sl. 23 says the results stated rise or fall according to the good or bad vargas, the divisional placements, the two grahas occupy. Saravali itself, then, does not want the one-line reading taken on its own.
The pair in the angles: Saravali Ch. 31
Saravali returns to the pair in Ch. 31, which reads two-planet conjunctions in the four angles. Sl. 2-5 cover the Sun and Moon. The readings for the 1st, 4th and 7th are heavy: grief over parents, loss of comfort, trouble with friends and partners. The 10th is different. There the text gives a fine physique, command of an army, a rajasic, driven temperament, and a hard edge: unkind, crooked, a destroyer of enemies. Saravali Ch. 16 Sl. 1-5 also has separate lines for the Sun and Moon joined by a third graha, from Mars to Saturn.
BPHS has no matching chapter on two grahas in one house. It approaches the same sky from the calendar instead. Ch. 85 Sl. 1-4 lists births on Amavasya among the inauspicious births, even when the lagna and grahas are well placed, and Ch. 86 opens with a claim of poverty for such a birth before prescribing a ritual. That is the text's claim, reported as such. This app does not prescribe the ritual, and it does not flag Amavasya birth in the chart. Note too that the BPHS rule is about the tithi, not the sign: many Sun-Moon conjunctions fall outside Amavasya, and the worked example below is one of them.
Yogas this pair can be part of
This app's yoga detector has no rule for the Sun and Moon together. The pair does change which other yogas can fire, in a way that follows directly from the rules. The solar yogas, Vesi, Vasi and Ubhayachari, count only Mars, Mercury, Jupiter, Venus and Saturn on either side of the Sun. The Moon is left out, as BPHS Ch. 38 and Saravali Ch. 14 direct. The lunar yogas, Sunapha, Anapha and Durudhura, count the same five around the Moon, so the Sun does not form them either.
A consequence is easy to miss. With the two lights in one sign, the same five grahas decide both families at once. A planet in the sign after them forms Vesi from the Sun and Sunapha from the Moon in the same breath. The worked example below shows exactly that, with Ubhayachari and Durudhura detected together.
Other yogas the engine lists in such a chart, such as Raj Yoga (Kendra-Kona) or Argala Raj Yoga, come from house lordships and are not about the pair. The full list for any chart is in the yogas calculator, and what a yoga in your chart means explains how to read it.
Combustion and the new Moon
For most grahas, combustion is an occasional state. For the Moon it is a monthly event. This app marks the Moon combust when the shortest arc between its sidereal longitude and the Sun's is 12 degrees or less. The figure is Kannan's, as cited in computeChart, and the Moon has no separate retrograde limit because it never turns retrograde. Sign boundaries play no part. A Sun at 28 degrees of one sign and a Moon at 5 degrees of the next are combust in this app, though they are not conjunct.
In a sample of 20,000 random birth moments 1950-2050 (described under "How often the pair occurs" below), the Moon was combust 1,351 times. In 1,081 of those it also shared the Sun's sign. In the other 270 it was just across a boundary. So of the 1,711 moments with the two in one sign, more than half had a combust Moon. The rest had the Moon 12 to 30 degrees from the Sun, still in its sign. The widest same-sign gap the sample produced was 29.69 degrees. When the flag is set, Shad Bala sets the Moon's Sthana (position) strength to zero.
Combust Moon, or new Moon?
The two describe the same sky in different terms. The tithi counts the Moon's lead over the Sun in 12-degree steps, so a combust Moon is, apart from the exact 12-degree edge, in the last tithi of Krishna Paksha (Amavasya) or the first tithi of Shukla Paksha. The moon phase calculator and the panchang show the same moment from the calendar side.
Worked example: Sun and Moon in Aries, 10th house
The chart below is the first in a fixed search through New Delhi birth moments that has the Sun and the Moon in one sign. Birth: 20 April 1985, 13:24 IST, New Delhi. Enter those details in the birth chart calculator to see the same positions. The ascendant is Cancer at 26.31 degrees, so with whole-sign houses Aries is the 10th house.
| Graha | Position | Nakshatra (pada) | House | Engine flags |
|---|---|---|---|---|
| Sun | Aries 6.53 | Ashwini (2) | 10 | Exalted |
| Moon | Aries 7.67 | Ashwini (3) | 10 | Friendly sign; combust |
| Rahu | Aries 25.71 | Bharani (4) | 10 | Neutral; always retrograde |
- Same sign? Yes. Both lights are in Aries, the 10th house. Saravali Ch. 15 Sl. 2 applies, and because the 10th is an angle, so does Ch. 31 Sl. 5.
- How far apart? The engine computes 1.13 degrees. The Moon is just ahead of the Sun. The app's lunarDay function, run for the same moment, gives tithi 1 of Shukla Paksha, phase "New Moon", 0 per cent illuminated. This is a birth within hours of the new Moon.
- Combust? Yes. 1.13 degrees is well inside the Moon's 12-degree limit, so the engine flags the Moon combust and Shad Bala zeroes its position strength. The Sun is never marked combust.
- Dignity? The Sun is exalted. BPHS Ch. 3 Sl. 49-50 puts its deepest exaltation at 10 degrees of Aries, and at 6.53 degrees it is close to that point. The Moon's label, Friendly sign, is the engine's compound reading of the Moon in Mars's sign.
- A third graha? Rahu is in Aries too, 19.18 degrees from the Sun. Saravali's two- and three-planet chapters say nothing about the nodes, so they do not change the reading above.
- Yogas? The engine detected Durudhura Yoga, Ubhayachari Yoga, Pasa Yoga, Argala Raj Yoga and Raj Yoga (Kendra-Kona). Mars in Taurus, the sign after Aries, and Mercury and Venus in Pisces, the sign before it, surround both lights at once. That one arrangement gives the Moon its Durudhura and the Sun its Ubhayachari.
The same chart, read from Rahu's side, is the worked example on the Sun-Rahu conjunction page, because the search for that pair stops at the same moment. For the sign and house, see the Sun in Aries, the Moon in Aries and the Sun in the 10th house. Nothing here is a prediction about anyone born at that moment. It shows which rules fire, and why.
How often the pair occurs
This app's usual 3,000-moment sample steps about nine days at a time, which carries the Moon several signs per step, so it cannot measure the Moon's pairs fairly. This page uses a separate sample: 20,000 instants drawn at random (with a fixed seed) between 1950 and 2050, each run through computeChart for New Delhi. In it the Sun and the Moon shared a sign 1,711 times, or 8.6 per cent. That is close to one in twelve, which is what a fast Moon passing through a slow Sun's sign once a month would suggest. In 925 of those 1,711 the two were within 10 degrees of each other. The pair recurs with every new Moon, which is why it is neither rare nor common: it is as frequent as the Moon's monthly pass allows.
Timing in the dasha system runs separately for each graha: the Sun's 6-year Mahadasha and the Moon's 10 years. See the Sun Mahadasha and the Moon Mahadasha. Neighbouring pairs on this site use the same method: Sun-Mercury, Sun-Mars, Moon-Mercury and Moon-Jupiter.
What this page does not claim
Saravali's lines describe a placement found in about one chart in twelve. They are reported as what the text says, not as a portrait of anyone. The app attaches no yoga, score or remedy to the pair. Where it does act, on the Moon's combustion, it uses one stated orb, and other software with another orb or another ayanamsa can disagree near the edges.
- Is a Sun-Moon conjunction the same as being born on Amavasya?
- Not exactly. Amavasya is the 30th tithi, the last 12 degrees before the Moon reaches the Sun. A Sun-Moon conjunction only needs both in one sign, which can include the first tithis of the waxing Moon, as in the worked example (tithi 1, Shukla Paksha).
- When does this app mark the Moon combust?
- When the Moon is within 12 degrees of the Sun by longitude, whatever the signs. In 20,000 random birth moments 1950-2050 that happened 1,351 times, 1,081 of them with the two in one sign.
- What does Saravali say about the Sun with the Moon?
- Ch. 15 Sl. 2: at the disposal of women, immodest, a metallurgist (or able to deceive), quite wealthy and expert in selling intoxicants. Ch. 31 adds readings for the pair in each angle; the 10th-house line is the strongest of the four.
- Are the Sun and the Moon friends or enemies?
- Friends. Saravali Ch. 4 Sl. 28-29 names each among the other's friends, and says the Moon has no enemies. The engine's relationship table uses the same lists.
- Does the app detect a yoga for the Sun and Moon together?
- No. The Moon is excluded from the solar yogas and the Sun from the lunar ones, and no other rule in the engine names this pair.
- Why is the Moon counted as a benefic in this app if it is waning?
- The engine's benefic list includes the Moon in every chart. Saravali Ch. 4 Sl. 9 and BPHS Ch. 3 Sl. 11 treat the waning Moon as malefic; the app does not apply that distinction in its yoga rules.
- Does the app suggest a remedy for a combust Moon?
- No. This app prescribes no gemstones, mantras, rituals or donations for any placement.
Birth Chart (Kundli)
All nine grahas by sign, degree and nakshatra, with houses when the birth time is known and the place resolves to coordinates.
This one has its own page
This one runs on its own page, built for it, where the full result is laid out properly. No account is needed there either.