Astrology — Daily Transit Forecast

Engine: Swiss Ephemeris (pyswisseph 2.10.3.2) + Pillow (PIL)

This skill calculates daily transits over a natal chart and generates an astrological forecast for any target date specified by the user (past, present, or future). It renders a composite 2-column chart showing a combined natal+transit wheel and a wide textual forecast panel.

🔬 Precision

All planetary positions are computed using the Swiss Ephemeris library (pyswisseph 2.10.3.2), which is based on NASA's JPL DE431 ephemerides. This ensures planetary position accuracy of approximately 0.003° — the same engine used by professional astrologers and astronomy software worldwide. House cusps are calculated using the Placidus system with exact iterative methods (swe.houses_ex()).

⚠️ Requirements

Architecture

daily_transits.py --json  →  JSON data (natal + transits + aspects + houses)  →  draw_daily.py  →  PNG image
         ↕
   daily_transits.py  →  text forecast output

daily_transits.py is the sole calculation engine powered by Swiss Ephemeris. draw_daily.py renders the chart by calling it via subprocess. This guarantees text and graphical output always match.

How Daily Transits Work

Step 1: Natal Chart → Fixed Foundation

The natal chart is the birth snapshot — positions of planets at the moment of birth. This never changes. Computed once from birth date, time, and location.

Step 2: Transit Positions → Moving Planets on Target Date

Transit positions are where the planets are on the user-specified target date (default: today). The user can request a forecast for any date — yesterday, tomorrow, or years in advance.

Step 3: Aspects Between Transits and Natal

When a transit planet forms an angle (aspect) with a natal planet, it activates that natal planet's energy. Aspect lines are drawn directly on the wheel:

Step 4: House Activation (Detailed)

Transit planets falling in specific natal houses show which life areas are activated. Each house is displayed with:
- House title and description
- Transit planets in the house (with sign, degrees, retrograde status)
- Interpretation of each transit planet in the context of that house
- Activation context if a natal planet also occupies the same house

Step 5: AI-Generated Extended Conclusion

An extended forecast summary is generated, including:
- Overall energy assessment (powerful/harmonious/challenging/calm)
- Transit planet context (sign position, meaning)
- Most activated house analysis
- Practical recommendations for the day

When run through OpenClaw, the AI agent can provide an enhanced conclusion via the --conclusion flag.

Usage

Text Forecast (CLI)

# Forecast for today
python scripts/daily_transits.py 24.04.1983 07:00 Ижевск --lang ru --name "Алексей"

# Forecast for any specific date (past, present, or future)
python scripts/daily_transits.py 24.04.1983 07:00 Ижевск --target-date 04.06.2026 --lang ru

# English output
python scripts/daily_transits.py 24.04.1983 07:00 Ижевск --lang en

# JSON output (for renderers / AI)
python scripts/daily_transits.py 24.04.1983 07:00 Ижевск --json --target-date 04.06.2026

Graphical Chart

# Chart for today (Russian)
python scripts/draw_daily.py 24.04.1983 07:00 Ижевск --lang ru --name "Алексей"

# Chart for any specific date
python scripts/draw_daily.py 24.04.1983 07:00 Ижевск --target-date 04.06.2026 --lang ru --name "Алексей"

# With AI-generated conclusion from file
python scripts/draw_daily.py 24.04.1983 07:00 Ижевск --target-date 04.06.2026 --lang ru --name "Алексей" --conclusion conclusion.txt

# English
python scripts/draw_daily.py 24.04.1983 07:00 Ижевск --target-date 04.06.2026 --lang en --name "Alexey"

CLI Arguments

JSON Output Format

{
  "name": "Алексей",
  "birth_date": "24.04.1983",
  "birth_time": "07:00",
  "birth_city": "Ижевск, Россия",
  "target_date": "04.06.2026",
  "natal": {
    "Sun": {"lon": 33.38, "speed": 0.974, "retro": false},
    "Moon": {"lon": 172.92, "speed": 14.116, "retro": false},
    ...
  },
  "transits": {
    "Sun": {"lon": 103.5, "speed": 0.955, "retro": false},
    ...
  },
  "transit_houses": {"Sun": 12, "Moon": 9, ...},
  "planet_houses": {"Sun": 12, "Moon": 6, ...},
  "houses": [asc_deg, ..., mc_deg],
  "asc": 1.83,
  "mc": 22.92,
  "aspects": [
    {"transit": "Sun", "natal": "Venus", "type": "conjunction", "symbol": "☌", "name": "Соединение", "nature": "powerful", "orb": 1.3}
  ],
  "engine": "Swiss Ephemeris v20230604"
}

Image Layout (5760×2880 px)

+------------------+---------------------------------------------+
|                  |                                             |
|   COMBINED       |          FORECAST PANEL                     |
|   WHEEL          |          (3600×2880)                        |
|   (2160×2160)    |                                             |
|                  |  - Date header + name                       |
|  - Sign sectors  |  - Key aspects (colored planet names)       |
|  - House cusps   |  - Aspect descriptions (word-wrapped)       |
|  - Natal planets |  - House activations (detailed, like natal  |
|    (pale, inner  |    chart skill):                            |
|    orbit RP=520) |    • House title + description              |
|  - Transit       |    • Transit planet (ME ♉ 12°30') in house  |
|    planets       |    • Interpretation of transit in house      |
|    (bright, outer|    • Natal planet activation context        |
|    orbit RP=720) |  - AI Conclusion (extended forecast)        |
|  - Aspect lines  |                                             |
|    (solid=color, |                                             |
|    dashed=retro) |                                             |
|                  |                                             |
|  --- Legends --- |                                             |
|  Planet|Element  |                                             |
|  |Aspect|Retro   |                                             |
+------------------+---------------------------------------------+

Font Handling

Two bundled fonts in scripts/:

Both are auto-copied to .ttf at runtime for Pillow compatibility. Per-character font selection ensures zodiac and aspect symbols render correctly alongside Cyrillic/Latin text.

Scripts Reference

AI Conclusion Workflow (for OpenClaw agents)

Step 1: python scripts/daily_transits.py <date> <time> <city> --json --target-date <date>
Step 2: AI analyzes JSON and writes enhanced conclusion to a file
Step 3: python scripts/draw_daily.py <date> <time> <city> --lang ru --name "Name" --conclusion <file>

When --conclusion is provided, the AI-generated text is used verbatim. Otherwise, the script generates a built-in conclusion.

Disclaimer

This is an entertainment/educational tool, not a scientific method. Do not make medical or financial decisions based on astrological readings.

Changelog

v5.0.0 (2026-06-04)

• Combined single wheel: natal planets (pale, inner orbit) + transit planets (bright, outer orbit) on one wheel
• Aspect lines on wheel: solid lines by aspect type, dashed lines for retrograde transits
• Wide forecast panel (3600px): full word-wrapped text with colored planet names
• House activations: detailed format matching astro-natal-chart skill (title → description → planets → interpretation)
• Transit planet interpretation: each transit planet in house gets contextual meaning
• Natal planet activation: shows when transit activates a natal planet in the same house
• AI conclusion: extended forecast with practical recommendations
• --conclusion flag: supports AI-generated conclusion files from OpenClaw
• Any target date: forecast can be computed for any past, present, or future date
• Precision: Swiss Ephemeris JPL DE431 ephemerides, ~0.003° accuracy

v1.0.0 (2026-06-04)

• Initial release
• Daily transit calculation with Swiss Ephemeris
• Aspect detection (8 types) with configurable orbs
• House activation analysis
• Bilingual text forecast (RU/EN)
• 3-column graphical chart (natal + transit + forecast)
• JSON export for AI integration
• Bundled fonts and swisseph as .dat files (ClawHub-compatible)