Compatibility readings: how two people fit, and how today sits between them

Lumia’s compatibility reading sets two BaZi charts against each other and names what happens between you. Two charts meet in specific places (his day master fed by your elements, your day branches in a clash), and each meeting is something that will happen between you, again and again, with a shape you can name. Lumia reads those meetings and adds the part most compatibility readings leave out: what the current day does to the pair.

The BaZi reading: supply

The BaZi reading asks whether the other person’s elements supply what your chart is short of, or add to what you already have too much of. A weak fire day master with a wood-rich partner is fed; with a water-rich partner, dampened. The day branches meet too. Some combine and some clash, and a clash is a known pattern of recurring argument, named in advance. BaZi compatibility.

Where Western synastry fits

Synastry is the Western method: lay one birth chart over the other and read the aspects between them. Venus to Moon is ease and affection. Sun to Saturn is weight and commitment, or feeling judged. Mars to Mars is desire, or fights. Lumia’s written compatibility reading is BaZi. Every person you add also gets a Western birth chart in the app, so both charts are there when you want to look.

Today between you

Your compatibility doesn’t change. The day does. Each day’s pillars meet each chart differently, and the reading ends with today’s weather for the pair: a day that favours one of you, a day to decide something together, a day to give each other room. This is the part people come back for.

What each relationship turns on

Both traditions look at different parts of the chart for different kinds of relationship.

RelationshipWestern emphasisBaZi emphasis
PartnerVenus, Moon, 7th house, MarsDay branch, element supply
FriendSun, Mercury, 11th housePeers and output elements
FamilyMoon, 4th house, SaturnMonth pillar, resource element
Work partnerSaturn, Mars, 10th and 6th housesWealth and authority elements

A worked example

He’s a strong wood day master and she’s metal-heavy. Metal controls wood, so she cuts him to shape, which he needs and resents. She’s the serious one; he feels judged, and steadied. Today the day’s element is water, which feeds wood: a good day for him to hear the hard thing. That’s a compatibility reading.

Frequently asked questions

How does Lumia compatibility work?

You add a person with their birth date, plus their birth time and city if you have them. Lumia casts their BaZi chart and reads it against yours: whether your elements supply each other, and how your day branches meet. The reading ends with what today does to the pair.

Is compatibility only for romantic partners?

No. Add a friend, a parent, a co-founder. The reading is about how the two of you work together, whatever the relationship.

Do I need their birth time?

No. The date gives most of the reading. The time adds their hour pillar, which sharpens it.

Is it free?

Adding people and seeing their charts is free. The written compatibility reading is Premium, $8.99 a month, first week free for new subscribers.

See your own chart

Lumia casts your birth chart from your date, time and city and reads it in plain language. The chart and its full reading are free; the written BaZi, transit and compatibility readings and the deeper tarot spreads are Premium, $8.99 a month, first week free for new subscribers.

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