Bruno Mars turns 41 on October 8. He was born in 1985 in Honolulu, with the Sun at about 15–16° Libra. Anderson .Paak, his partner in Silk Sonic, was born on February 8, 1986, in Oxnard, California, with the Sun at about 19–20° Aquarius. Both are air signs, which is usually where the comparison stops. The more specific link is Bruno's Mercury, which trines three of .Paak's planets for the whole of both birth days.
The two birth records
| | Bruno Mars | Anderson .Paak | |---|---|---| | Born | October 8, 1985 | February 8, 1986 | | Place | Honolulu, Hawaii | Oxnard, California | | Source | Wikipedia | Wikipedia | | Clock used | none (stored time rated C, set aside) | none on record | | Sun | about 15–16° Libra | about 19–20° Aquarius | | Moon | Cancer or Leo (changes sign at 01:33 local time) | Aquarius all day (about 10–24°) |
The collaboration is public record. Bruno's Wikipedia article says that on February 26, 2021, "Mars and rapper Anderson .Paak announced that they recorded an album as Silk Sonic." .Paak's article puts it this way: "In 2021, he formed the duo Silk Sonic with fellow singer-songwriter Bruno Mars." Their album, An Evening with Silk Sonic, came out that year. Its first single, "Leave the Door Open", reached number one on the Billboard Hot 100.
How this was calculated
Neither chart has a usable birth time, so both are date-only. Each civil day was sampled every hour from 00:00 to 23:00 and again at 23:59, in its own time zone (Hawaii and Pacific time). We used Lunara's central Swiss Ephemeris engine in the tropical zodiac. A placement or contact counts only if it holds at every sample. For the contacts between the two charts, that means every pairing of a time on Bruno's day with a time on .Paak's.
So there's no Rising sign, no houses and no Moon aspects. Bruno's Moon stays unresolved because it left Cancer for Leo in the small hours. Degrees are given as ranges because a single "natal degree" would imply a clock we don't have.
One chart versus two
A natal chart is one person's sky. Bruno's Venus at about 20–21° Virgo and Mars at about 18° Virgo sit together in his chart. That conjunction belongs to him alone, and his full profile reads it on its own terms. .Paak's chart has its own concentration: the Sun, Mercury, Venus and Jupiter all in Aquarius, with the Moon there all day too.
Synastry is different. It takes a planet in one chart and measures it against a planet in the other. Those contacts don't exist in either chart separately; they only appear when you lay the two side by side.
The contact that holds all day: one Mercury, three trines
Bruno's Mercury sits at about 26–28° Libra. .Paak's Jupiter is at about 27° Aquarius. That's a trine, 120° apart, with an orb of 0–1° across every combination of hours. The same Mercury also trines .Paak's Mercury (orb 0–3°) and his Venus (orb 1–4°), both clustered at 24–27° Aquarius.
In synastry, astrologers read Mercury–Jupiter contacts as one person's ideas getting room and encouragement from the other. Mercury–Mercury trines are read as an easy shared tempo in conversation. These are symbolic readings of a geometric fact. They don't describe how the two actually work together, and they predict nothing about a partnership.
The friction runs the other way. Bruno's Saturn, at about 26° Scorpio, squares .Paak's Mercury (orb 0–1°) and Venus (orb about 0–2°). His Venus squares .Paak's Uranus at about 21° Sagittarius (orb under 2°). Saturn squares are read as structure pressing on the other person's expression. Venus–Uranus squares are read as taste meeting the unexpected.
What doesn't count
The air-sign Suns form only a loose trine, 3–5° wide, so it isn't the headline. The outer planets match too: Neptune in early Capricorn, Pluto in early Scorpio, Chiron in Gemini. But the two were born four months apart, and those planets barely moved in between. Everyone born in that stretch shares them.
A craft contrast, from the record
This part has nothing to do with astrology. According to Wikipedia, .Paak's "first experiences performing were as a drummer at his family's church", and drums lead his instrument list. Bruno's article says he "established his name in the music industry as a songwriter and co-founder of the production team the Smeezingtons", and lists drums, guitar, keyboard, bass and more. One came up behind a kit, the other through writing and production rooms. Neither chart explains either route.
Put your chart beside theirs
The profiles carry the full readings and their clock notes: Bruno Mars's natal chart and Anderson .Paak's natal chart. Each page lets you put your own chart beside theirs. For two charts of your choosing, the synastry chart tool calculates both from details you enter.
Start with your own: the free natal chart calculator shows your Mercury, and whether your Moon sign is firm without a birth time. If you'd like it explained in depth, there's an optional paid personal birth chart reading. What's included and the price are shown before you buy.
Calculation notes
Positions are tropical and geocentric, from Lunara's central Swiss Ephemeris path. Hourly samples plus 23:59 were taken for October 8, 1985 (Pacific/Honolulu) and February 8, 1986 (America/Los_Angeles). Ranges cover each whole civil day. Bruno's stored time, rated C, was not used. Dates and places match the Wikipedia articles linked above, accessed October 5, 2026. Neither article gives a birth time, and we haven't seen a birth record for either artist. Nothing here suggests either artist endorses this analysis.
Text written with AI assistance. The positions are calculated, not estimated.