BTS's six star signs are the ordinary result. The 9,249 behind them are not

Seven people. Six star signs. RM and Jung Kook are both Virgos, and nobody else in BTS overlaps.

That looks like it should mean something. We checked whether it does, and the checking is where the story turned out to be.

Six of seven is the most likely answer there is

We hold 9,249 Korean entertainers with a date of birth. We drew seven of them at random 200,000 times, using the real distribution rather than an even one, and counted how many distinct signs came out.

Six is the commonest outcome, though only just — five comes up 37.3% of the time, and a different seven people could easily have landed there instead. Either way, nothing about how BTS is spread across the zodiac is unusual. If you were hoping for a pattern, this is the honest answer: there isn’t one.

The population is where the strange number is

While building that baseline we had to count the signs across all 9,249, and that count does not look like chance at all.

If birthdays fell evenly, each sign would hold about 771 people, and chance alone would move that by roughly 27 either way. Four signs sit far outside that.

Pisces holds 919 and Gemini 688 — a gap of 1.34 to one, in a set where chance should keep them within about 50 of each other.

It is a fact about the calendar, not about the zodiac

Counted by the day rather than the month, the shape is plain.

February makes 30.5 of these people a day and June makes 21.8 — 1.40 to one. Winter and early spring carry more births than early summer, and the signs simply inherit the calendar. Pisces sits across the end of February and most of March, which is why it is the largest sign in the set.

Nothing in this says a Pisces is more likely to become famous. It says more people in this set were born in late winter, and Pisces is the sign that late winter lands in.

One of these numbers is partly an artefact, and we are not hiding it

Forty-eight people in our source are recorded as born on 1 January. That is the date used when only a year of birth is known, so it is not 48 real New Year’s Day births. Capricorn drops from 857 to 809 with those removed — from +3.2 to about +1.4, which is inside the noise.

So Capricorn’s excess may be an artefact. Pisces’ is not — 1 January does not touch it, and at +5.6 sd it stays the outlier either way.

Twenty-eight February also holds 48 people, and we could not work out why. We are leaving it unflagged rather than guessing, because a flag we cannot defend would make the 1 January flag worth less.

Why we were counting this today

A Korean sports daily reported this week that BTS’s Arirang was in its 24th week on the UK Official Albums Chart. We did not measure that chart and make no claim about it — it is the reason we opened the file, not a number of ours.

What we could do was take the seven people in the story and ask what our own data says about them. The answer was “nothing unusual,” and the honest thing is to publish that. This is a statistic, not a person. We do not tell you what a sign means, because a date of birth does not carry that information, and pretending otherwise would make us a fortune teller rather than a map.

The seven members’ dates, the full twelve-sign table and the month-by-month counts are on the page behind it.