Astro Locality

My charts…

One page, three ways to see how place changes a chart: trace where a planet's influence runs strongest around the globe, recast the whole chart as if it had happened somewhere else, or follow each planet's compass direction out from the birthplace (or your home) in local space.

Birth data

Using -25.62, 27.78 — Africa/Johannesburg

Enter Longitude, Latitude & Time Zone manually

Birth data is used only to draw this map and is not stored — re-enter it each time. Astrocartography needs a known birth time; there is no "time unknown" option here.

Planets & lines All · None
Aspect layers

MC, IC, Asc, Desc — a conjunction line is also the opposition line to the angle on the far side.

90° to each angle — denser, off by default.

60° to each angle — off by default.

120° to each angle — off by default.

Square / sextile / trine convention

In mundo measures the aspect along the sky's daily rotation (hour angle) — the traditional Astro*Carto*Graphy convention, and this tool's default. In zodiaco measures along the zodiac belt (ecliptic longitude) instead, matching the Chart Relocation tool's own aspects. The two agree near the equator and can disagree by a full aspect at high latitude — see the footer note below.

Highlights where two different planets' conjunction/opposition (MC/IC/Asc/Desc) lines cross or run close together — the traditional paran, not computed for square/sextile/trine lines.

Local space

Each line leaves the centre point in the compass direction a planet lay in at the moment of birth and runs on around the globe. The fainter, thinner part is the same line continuing out the opposite way. Tick or untick planets in the list above.

Centre the lines on
Legend

A planet's line (color = planet)

☊ MC Where a line meets the map's edge, a small tag names the planet and line type (MC / IC / Asc / Desc)

Paran zone (crossing ± orb)

☉ Birthplace

Chart data

Lines are computed from real Swiss Ephemeris positions for the birth data above (mean sidereal time and mean obliquity of the ecliptic). Square, sextile and trine lines can be switched between the "in mundo" convention (offsetting hour angle — the traditional Astro*Carto*Graphy method, and this tool's default) and the "in zodiaco" convention (offsetting ecliptic longitude, matching the Chart Relocation tool's own aspects) using the switch under Aspect layers — traditions differ on which is "correct", and the two agree near the equator but can disagree by a full aspect category at high latitude, since the Ascendant's zodiac position is a markedly uneven function of the sky's rotation there. Paran-zone radius is a flat km-to-degree conversion (1° ≈ 111km), not corrected for latitude.