Banshoreki main entrance ＞ Observatory ＞ Positions

Positions

From date, time and place: planetary longitudes, houses and aspects as numbers, together with the intermediate values used in the calculation (Julian Day, ΔT, sidereal time, obliquity, nutation).

Not a reading; no interpretation text. A tool for checking the steps in the guide with your own birth data, or comparing with other software. It calls the same code as the Banshoreki reading, so the same input gives the same numbers.

Year

Month

Day

Hour

Min

Place

Time unknown Place unknown

Time zone, coordinates & chart options

UTC offset (h)

Latitude (N +)

Longitude (E +)

House system

Harmonic n

Enter the UTC offset in effect at that place and time (Japan 9; New York −4 in summer / −5 in winter; London 1 / 0). Picking a city with “Find a city” fills the offset for that date and time (daylight saving included) from about 34,000 GeoNames cities and the IANA tzdata history (what was entered is shown under the field; before 1970 the values are estimates). Latitude and longitude can be typed directly.

Open as a wheel See in the 3D sky

The CSV is UTF-8 with BOM and opens directly in spreadsheets (column names are in Japanese). Saved inputs stay on this device (localStorage); nothing is sent anywhere.

See astronomical data and precision for the new TT-table checks. The previous verification is retained as a historical record.

Choose house systems and zodiac in settings (the main reading uses tropical Placidus). Sun, Moon, planets and small bodies use JPL Horizons TT tables. Time uses USNO and EOP, with a ΔT model outside coverage. Nodes, Lilith, nutation and houses retain separate approximations.

Aspects and orbs can be changed in Settings (this device only; the readings are unaffected).