☉ Free Cazimi and Combust Calculator: Who Is Close to the Sun?

Pick any moment and Umbriel shows how far each planet from Mercury to Saturn stands from the Sun, which of the old words that earns it (cazimi, combust, under the beams or clear), whether it is closing in or drawing away, and when it next meets the Sun. It also shows how far apart they really are on the sky, which is not always what the zodiac says. Free.

• What you'll needNothing: pick a moment, or use now
• What you getEach classical planet's distance from the Sun along the zodiac and on the sky, its old name, its direction, and its next meeting with the Sun
• CostFree, no account required

Cazimi, combust and under the beams are three bands of distance from the Sun. A planet within about 17 arcminutes of the Sun, the width of the Sun's own disc, is cazimi, said in the old books to stand in the heart of the Sun and to be strengthened by it. Out to 8°30′ it is combust, burned up in the glare. Out to 15° it is under the beams. Beyond that it is clear. Writers differ on the outer two limits, so the card names the ones it uses and the windows card beside it lets you set your own.

Along the zodiac is not the same as on the sky. The traditional measure is the difference in ecliptic longitude. The distance you would see also depends on how far above or below the ecliptic the planet is, and for Mercury and Venus that can be several degrees. The Venus inferior conjunction of 24 October 2026 shows it plainly: Venus passes the Sun in longitude at 03:44 UT, is inside the cazimi limit along the zodiac from 23:30 UT on 23 October 2026 to 07:57 UT on 24 October 2026, and yet never comes nearer than 6°29′ to the Sun on the sky, because it is 6°31′ south of the ecliptic. It is cazimi by the zodiac's count and a clear 6°29′ away to the eye. The card shows both numbers and says so when they differ by more than a degree.

Two meetings, not one. Mercury and Venus meet the Sun twice each cycle: on the near side (inferior conjunction), when they are retrograde and about to change from evening star to morning star, and on the far side (superior conjunction), when they are moving forward and hidden behind the Sun. The card labels which kind is next. Mars, Jupiter and Saturn have only the one kind.

Morning star and evening star. A planet whose longitude is behind the Sun's rises before it and is seen in the morning sky; one ahead of the Sun sets after it and is seen in the evening. For Mercury and Venus the card says morning star or evening star. For the others it says whether the planet rises before or after the Sun.

It is a description, not a verdict. The old books read a combust planet as weakened and a cazimi one as strengthened. Treat that as one tradition's weather report. In a birth chart the same bands show up as a planet very close to the Sun, which many people find reads as a theme that is hard to separate from identity rather than as a flaw.

Positions, speeds and the Sun's place come from the same engine that casts the charts. For each of Mercury, Venus, Mars, Jupiter and Saturn the card takes the gap in ecliptic longitude from the Sun at the moment you pick, names it cazimi inside 17 arcminutes, combust inside 8°30′ and under the beams inside 15°, works out from the two speeds whether the gap is closing or opening, and searches forward for the next time the planet's longitude matches the Sun's. It also measures the true distance on the sky from the longitudes and the latitudes together, which is what shows a conjunction that is cazimi along the zodiac but not on the Sun's disc. The three limits are the ones the cazimi windows card uses and you can set your own there.