How the text is made
Text on this site was drafted with AI assistance. Positions are calculated by code and checked by automated tests. The site owner reviews the wording before it goes live.
Methodology
This page explains how AstroJane calculates positions, how the results are tested and how the text is made.
How positions are calculated
Live Sky uses the open-source astronomy-engine library, version 2.1.19, under the MIT License. Positions are apparent and geocentric, in the tropical zodiac. The server calculates a snapshot for the page, and the browser recalculates it every 30 seconds from the device clock. Chiron comes from a table of JPL Horizons positions. The nodes and Black Moon Lilith are mean positions.
What the results are tested against
Reference data were fetched on October 30 and 31, 2026. The tests run on every code change.
| Measured | Reference | Sample | Tested limit |
|---|---|---|---|
| Sun longitude | JPL Horizons DE441 | 124 instants, 1878 to 2035 | 3 arcseconds |
| Moon longitude | JPL Horizons DE441 | 124 instants, 1878 to 2035 | 8 arcseconds |
| Mercury to Pluto longitude | JPL Horizons | 124 instants per body, 1878 to 2035 | 20 arcseconds |
| Chiron longitude | JPL Horizons | 40 instants | 1 arcsecond |
| Moon phases | US Naval Observatory | 247 phases | 40 seconds |
| Sun and Moon rise and set | US Naval Observatory | 32 city-days | 40 seconds |
| Moon illumination | JPL Horizons | 9 instants | 0.01 percentage points |
Known limits
At the Mercury station tested, the retrograde flag changed about 100 seconds before the time JPL Horizons lists, a limit of the planetary model. Slower planets turn more gently, so their flag can be further off. Rise and set times assume a sea-level horizon and standard refraction. Once the page is running, all results follow the device clock.
What the positions do and do not mean
The positions are astronomy. Their meanings come from astrological tradition, which this site describes as tendencies. Scientific evidence does not support the predictive claims of astrology, Human Design or numerology.
Who operates this site
AstroJane is operated by Roomanos Labs (Roomanos Lab Teknoloji Limited Şirketi). Contact: info@roomanos.com.
AstroJane is pronounced AS-tro-jayn.
Corrections
If a position, date or statement looks wrong, write to info@roomanos.com.
Last reviewed: November 3, 2026