Day Master

POST

/bazi/day-master

request.sh

curl -X POST https://api.astroway.info/v1/bazi/day-master \
  -H "X-Api-Key: aw_live_..." \
  -H "Content-Type: application/json" \
  -d '{ "date": "1990-05-15", "time": "15:30:00", "timezone": "Europe/Kyiv" }'

▸ Спробувати POST /bazi/day-master

• Production

Day stem element + yin/yang polarity + canonical archetype description. The “self” character in BaZi from which all other pillars are interpreted.

Authorizations

• ApiKeyAuth

Parameters

Query Parameters

fields

string

Comma-separated dotted paths, relative to data, to keep in the response. A path is applied to every element of an array, so planets.name means the name of each planet. Paths that match nothing come back in _fields_unmatched; a list where nothing matches at all is a 400, because an empty object would be a confident wrong answer.

Example

planets.name,planets.longitude

precision

integer

<= 15

Round every non-integer number in the response to this many decimal places. Integers are left alone, because an id is not a measurement. Ecliptic longitudes ship with fourteen decimals by default; 2 is about a tenth of an arcminute.

Example

4

Request Body ^required

Media type application/json

object

date required

string

/^\d{4}-\d{2}-\d{2}$/

time

string

/^\d{2}:\d{2}(:\d{2})?$/

timezoneOffset

Ignored when timezone is sent.

number

>= -14 <= 14

timezone

IANA zone name such as Europe/Kyiv, or auto to look the zone up from latitude and longitude. The server takes the offset that zone kept at this local date and time, summer time included, and uses it in place of timezoneOffset. A clock time that happened twice takes the first occurrence; one skipped when clocks went forward takes the offset from before the change. Abbreviations such as EST are refused. Before 1970 the tz database is not reliable for every place, so send timezoneOffset when the local clock is known.

string

language

string

Example

{
  "date": "1990-05-15",
  "time": "15:30:00",
  "timezone": "Europe/Kyiv"
}

Responses

200

Successful calculation

Media type application/json

object

ok

boolean

data

object

dayMaster

object

stem

string

nullable

element

string

nullable

yin

boolean

nullable

polarityName

string

nullable

dayPillar

object

stem

string

nullable

branch

string

nullable

pillar

string

nullable

animal

string

nullable

stemElement

string

nullable

branchElement

string

nullable

yin

boolean

nullable

interpretation

object

summary

string

nullable

archetype

string

nullable

notes

Array<string>

nullable

disclaimer

string

nullable

Example

{
  "ok": true,
  "data": {
    "dayMaster": {
      "stem": "Geng",
      "element": "Metal",
      "yin": false,
      "polarityName": "Yang Metal"
    },
    "dayPillar": {
      "stem": "Geng",
      "branch": "Chen",
      "pillar": "Geng-Chen",
      "animal": "Dragon",
      "stemElement": "Metal",
      "branchElement": "Earth",
      "yin": false
    },
    "interpretation": {
      "summary": "Yang Metal day master: Geng.",
      "archetype": "Geng (Yang Metal): sword / iron; decisive, direct, strong-willed."
    },
    "notes": [
      "Day master is the day stem: the core \"self\" character in BaZi. All other pillars relate to it."
    ],
    "disclaimer": "BaZi pillars use the canonical 60-jiazi cycle, anchored at 1990-01-01 = Bing-Yin. Year and month boundaries are the exact Lichun and 節 instants from the ephemeris, stated in China Standard Time; pass time and timezoneOffset for births near a boundary. Day and hour follow the birthplace clock, with the day rolling at 23:00 local."
  }
}

400

Validation error

Media type application/json

Example

{
  "ok": false,
  "error": {
    "code": "INVALID_INPUT",
    "message": "Validation failed: date: Date must be YYYY-MM-DD",
    "details": [
      {
        "path": "date",
        "message": "Date must be YYYY-MM-DD"
      }
    ]
  }
}

401

Missing or invalid API key

Media type application/json

Example

{
  "ok": false,
  "error": {
    "code": "INVALID_API_KEY",
    "message": "Invalid API key"
  }
}