Birth Chart Wheel Anatomy, Axes, and Cusps: A Source-Reviewed Guide
A chart wheel layers zodiac longitude, planets, aspects, four angles, and house cusps around a common circle. Scope and limits are explicit.
Overview
The wheel separates zodiac longitude, houses, cusps, ASC–DSC and MC–IC axes, planets, aspect lines, and legends so a drawing can be traced back to numeric chart fields. The page shows exactly what to verify, how to repeat the method, where a plausible near miss fails, which variants change the result, and what the evidence cannot establish.
At a glance
- Direct scope
- Reviewed finding — A chart wheel layers zodiac longitude, planets, aspects, four angles, and house cusps around a common circle. Glyph placement, rotation direction, inner rings, and labels are display choices distinct from calculated values.
- Evidence to verify
- Method checkpoint — Read the legend and receipt first, identify zodiac and house system, locate ASC–DSC and MC–IC axes, trace cusp order, verify planet longitudes against the table, then treat collision-avoidance offsets as visual only.
- Repeatable method
- Worked-case result — Two planets plotted several pixels apart may share nearly the same longitude because labels were fanned outward. Selecting either glyph reveals the unshifted degree and its actual house interval.
- Worked example
- Failure condition — Assuming the top of every wheel is the Midheaven misreads charts rotated to place the Ascendant at nine o’clock or zero Aries at the top. Orientation must come from labels, not screen position.
- Near miss
- Documented variant — Wheels may run clockwise or counterclockwise, show aspects selectively, use unequal quadrant houses, or place signs in an outer or inner ring. The underlying table remains the comparison authority.
- Limits and safety
- Use boundary — The wheel is a visualization, not evidence of causation or a complete reading. Missing time can invalidate axes and cusps, and decorative geometry must not be interpreted as an additional chart factor.
Definition and Scope
The wheel separates zodiac longitude, houses, cusps, ASC–DSC and MC–IC axes, planets, aspect lines, and legends so a drawing can be traced back to numeric chart fields.
A chart wheel layers zodiac longitude, planets, aspects, four angles, and house cusps around a common circle. Glyph placement, rotation direction, inner rings, and labels are display choices distinct from calculated values.
Evidence and Repeatable Method
Read the legend and receipt first, identify zodiac and house system, locate ASC–DSC and MC–IC axes, trace cusp order, verify planet longitudes against the table, then treat collision-avoidance offsets as visual only.
Worked Example and Near Miss
Two planets plotted several pixels apart may share nearly the same longitude because labels were fanned outward. Selecting either glyph reveals the unshifted degree and its actual house interval.
Assuming the top of every wheel is the Midheaven misreads charts rotated to place the Ascendant at nine o’clock or zero Aries at the top. Orientation must come from labels, not screen position.
Variants and Disagreement
Wheels may run clockwise or counterclockwise, show aspects selectively, use unequal quadrant houses, or place signs in an outer or inner ring. The underlying table remains the comparison authority.
Limits and Safe Use
The wheel is a visualization, not evidence of causation or a complete reading. Missing time can invalidate axes and cusps, and decorative geometry must not be interpreted as an additional chart factor.
Chart combinations covered here
The combinations below show the exact chart configurations covered by this topic. Confirm every named body, sign, house, aspect, date, and chart role before interpreting a combination; none is a prediction by itself.
- Details to confirm
- If a named body, sign, house, aspect, time, coordinate, house system, or chart subject is missing or unreliable, stop at the basic definition and do not infer the state.
- How to interpret these combinations
- This is a reproducible coordinate reference only. It does not assign a symbolic degree meaning without a separately sourced method.
- How to use the sources
- The bibliography for this topic provides general context. Check the cited passage before relying on an interpretive claim.
- 0° Zodiac DegreeZodiac degree coordinate
- 1° Zodiac DegreeZodiac degree coordinate
- 2° Zodiac DegreeZodiac degree coordinate
- 3° Zodiac DegreeZodiac degree coordinate
- 4° Zodiac DegreeZodiac degree coordinate
- 5° Zodiac DegreeZodiac degree coordinate
- 6° Zodiac DegreeZodiac degree coordinate
- 7° Zodiac DegreeZodiac degree coordinate
- 8° Zodiac DegreeZodiac degree coordinate
- 9° Zodiac DegreeZodiac degree coordinate
- 10° Zodiac DegreeZodiac degree coordinate
- 11° Zodiac DegreeZodiac degree coordinate
- 12° Zodiac DegreeZodiac degree coordinate
- 13° Zodiac DegreeZodiac degree coordinate
- 14° Zodiac DegreeZodiac degree coordinate
- 15° Zodiac DegreeZodiac degree coordinate
- 16° Zodiac DegreeZodiac degree coordinate
- 17° Zodiac DegreeZodiac degree coordinate
- 18° Zodiac DegreeZodiac degree coordinate
- 19° Zodiac DegreeZodiac degree coordinate
- 20° Zodiac DegreeZodiac degree coordinate
- 21° Zodiac DegreeZodiac degree coordinate
- 22° Zodiac DegreeZodiac degree coordinate
- 23° Zodiac DegreeZodiac degree coordinate
- 24° Zodiac DegreeZodiac degree coordinate
- 25° Zodiac DegreeZodiac degree coordinate
- 26° Zodiac DegreeZodiac degree coordinate
- 27° Zodiac DegreeZodiac degree coordinate
- 28° Zodiac DegreeZodiac degree coordinate
- 29° Zodiac DegreeZodiac degree coordinate
- 30° Zodiac DegreeZodiac degree coordinate
- 31° Zodiac DegreeZodiac degree coordinate
- 32° Zodiac DegreeZodiac degree coordinate
- 33° Zodiac DegreeZodiac degree coordinate
- 34° Zodiac DegreeZodiac degree coordinate
- 35° Zodiac DegreeZodiac degree coordinate
- 36° Zodiac DegreeZodiac degree coordinate
- 37° Zodiac DegreeZodiac degree coordinate
- 38° Zodiac DegreeZodiac degree coordinate
- 39° Zodiac DegreeZodiac degree coordinate
- 40° Zodiac DegreeZodiac degree coordinate
- 41° Zodiac DegreeZodiac degree coordinate
- 42° Zodiac DegreeZodiac degree coordinate
- 43° Zodiac DegreeZodiac degree coordinate
- 44° Zodiac DegreeZodiac degree coordinate
- 45° Zodiac DegreeZodiac degree coordinate
- 46° Zodiac DegreeZodiac degree coordinate
- 47° Zodiac DegreeZodiac degree coordinate
- 48° Zodiac DegreeZodiac degree coordinate
- 49° Zodiac DegreeZodiac degree coordinate
- 50° Zodiac DegreeZodiac degree coordinate
- 51° Zodiac DegreeZodiac degree coordinate
- 52° Zodiac DegreeZodiac degree coordinate
- 53° Zodiac DegreeZodiac degree coordinate
- 54° Zodiac DegreeZodiac degree coordinate
- 55° Zodiac DegreeZodiac degree coordinate
- 56° Zodiac DegreeZodiac degree coordinate
- 57° Zodiac DegreeZodiac degree coordinate
- 58° Zodiac DegreeZodiac degree coordinate
- 59° Zodiac DegreeZodiac degree coordinate
- 60° Zodiac DegreeZodiac degree coordinate
- 61° Zodiac DegreeZodiac degree coordinate
- 62° Zodiac DegreeZodiac degree coordinate
- 63° Zodiac DegreeZodiac degree coordinate
- 64° Zodiac DegreeZodiac degree coordinate
- 65° Zodiac DegreeZodiac degree coordinate
- 66° Zodiac DegreeZodiac degree coordinate
- 67° Zodiac DegreeZodiac degree coordinate
- 68° Zodiac DegreeZodiac degree coordinate
- 69° Zodiac DegreeZodiac degree coordinate
- 70° Zodiac DegreeZodiac degree coordinate
- 71° Zodiac DegreeZodiac degree coordinate
- 72° Zodiac DegreeZodiac degree coordinate
- 73° Zodiac DegreeZodiac degree coordinate
- 74° Zodiac DegreeZodiac degree coordinate
- 75° Zodiac DegreeZodiac degree coordinate
- 76° Zodiac DegreeZodiac degree coordinate
- 77° Zodiac DegreeZodiac degree coordinate
- 78° Zodiac DegreeZodiac degree coordinate
- 79° Zodiac DegreeZodiac degree coordinate
- 80° Zodiac DegreeZodiac degree coordinate
- 81° Zodiac DegreeZodiac degree coordinate
- 82° Zodiac DegreeZodiac degree coordinate
- 83° Zodiac DegreeZodiac degree coordinate
- 84° Zodiac DegreeZodiac degree coordinate
- 85° Zodiac DegreeZodiac degree coordinate
- 86° Zodiac DegreeZodiac degree coordinate
- 87° Zodiac DegreeZodiac degree coordinate
- 88° Zodiac DegreeZodiac degree coordinate
- 89° Zodiac DegreeZodiac degree coordinate
- 90° Zodiac DegreeZodiac degree coordinate
- 91° Zodiac DegreeZodiac degree coordinate
- 92° Zodiac DegreeZodiac degree coordinate
- 93° Zodiac DegreeZodiac degree coordinate
- 94° Zodiac DegreeZodiac degree coordinate
- 95° Zodiac DegreeZodiac degree coordinate
- 96° Zodiac DegreeZodiac degree coordinate
- 97° Zodiac DegreeZodiac degree coordinate
- 98° Zodiac DegreeZodiac degree coordinate
- 99° Zodiac DegreeZodiac degree coordinate
- 100° Zodiac DegreeZodiac degree coordinate
- 101° Zodiac DegreeZodiac degree coordinate
- 102° Zodiac DegreeZodiac degree coordinate
- 103° Zodiac DegreeZodiac degree coordinate
- 104° Zodiac DegreeZodiac degree coordinate
- 105° Zodiac DegreeZodiac degree coordinate
- 106° Zodiac DegreeZodiac degree coordinate
- 107° Zodiac DegreeZodiac degree coordinate
- 108° Zodiac DegreeZodiac degree coordinate
- 109° Zodiac DegreeZodiac degree coordinate
- 110° Zodiac DegreeZodiac degree coordinate
- 111° Zodiac DegreeZodiac degree coordinate
- 112° Zodiac DegreeZodiac degree coordinate
- 113° Zodiac DegreeZodiac degree coordinate
- 114° Zodiac DegreeZodiac degree coordinate
- 115° Zodiac DegreeZodiac degree coordinate
- 116° Zodiac DegreeZodiac degree coordinate
- 117° Zodiac DegreeZodiac degree coordinate
- 118° Zodiac DegreeZodiac degree coordinate
- 119° Zodiac DegreeZodiac degree coordinate
- 120° Zodiac DegreeZodiac degree coordinate
- 121° Zodiac DegreeZodiac degree coordinate
- 122° Zodiac DegreeZodiac degree coordinate
- 123° Zodiac DegreeZodiac degree coordinate
- 124° Zodiac DegreeZodiac degree coordinate
- 125° Zodiac DegreeZodiac degree coordinate
- 126° Zodiac DegreeZodiac degree coordinate
- 127° Zodiac DegreeZodiac degree coordinate
- 128° Zodiac DegreeZodiac degree coordinate
- 129° Zodiac DegreeZodiac degree coordinate
- 130° Zodiac DegreeZodiac degree coordinate
- 131° Zodiac DegreeZodiac degree coordinate
- 132° Zodiac DegreeZodiac degree coordinate
- 133° Zodiac DegreeZodiac degree coordinate
- 134° Zodiac DegreeZodiac degree coordinate
- 135° Zodiac DegreeZodiac degree coordinate
- 136° Zodiac DegreeZodiac degree coordinate
- 137° Zodiac DegreeZodiac degree coordinate
- 138° Zodiac DegreeZodiac degree coordinate
- 139° Zodiac DegreeZodiac degree coordinate
- 140° Zodiac DegreeZodiac degree coordinate
- 141° Zodiac DegreeZodiac degree coordinate
- 142° Zodiac DegreeZodiac degree coordinate
- 143° Zodiac DegreeZodiac degree coordinate
- 144° Zodiac DegreeZodiac degree coordinate
- 145° Zodiac DegreeZodiac degree coordinate
- 146° Zodiac DegreeZodiac degree coordinate
- 147° Zodiac DegreeZodiac degree coordinate
- 148° Zodiac DegreeZodiac degree coordinate
- 149° Zodiac DegreeZodiac degree coordinate
- 150° Zodiac DegreeZodiac degree coordinate
- 151° Zodiac DegreeZodiac degree coordinate
- 152° Zodiac DegreeZodiac degree coordinate
- 153° Zodiac DegreeZodiac degree coordinate
- 154° Zodiac DegreeZodiac degree coordinate
- 155° Zodiac DegreeZodiac degree coordinate
- 156° Zodiac DegreeZodiac degree coordinate
- 157° Zodiac DegreeZodiac degree coordinate
- 158° Zodiac DegreeZodiac degree coordinate
- 159° Zodiac DegreeZodiac degree coordinate
- 160° Zodiac DegreeZodiac degree coordinate
- 161° Zodiac DegreeZodiac degree coordinate
- 162° Zodiac DegreeZodiac degree coordinate
- 163° Zodiac DegreeZodiac degree coordinate
- 164° Zodiac DegreeZodiac degree coordinate
- 165° Zodiac DegreeZodiac degree coordinate
- 166° Zodiac DegreeZodiac degree coordinate
- 167° Zodiac DegreeZodiac degree coordinate
- 168° Zodiac DegreeZodiac degree coordinate
- 169° Zodiac DegreeZodiac degree coordinate
- 170° Zodiac DegreeZodiac degree coordinate
- 171° Zodiac DegreeZodiac degree coordinate
- 172° Zodiac DegreeZodiac degree coordinate
- 173° Zodiac DegreeZodiac degree coordinate
- 174° Zodiac DegreeZodiac degree coordinate
- 175° Zodiac DegreeZodiac degree coordinate
- 176° Zodiac DegreeZodiac degree coordinate
- 177° Zodiac DegreeZodiac degree coordinate
- 178° Zodiac DegreeZodiac degree coordinate
- 179° Zodiac DegreeZodiac degree coordinate
- 180° Zodiac DegreeZodiac degree coordinate
- 181° Zodiac DegreeZodiac degree coordinate
- 182° Zodiac DegreeZodiac degree coordinate
- 183° Zodiac DegreeZodiac degree coordinate
- 184° Zodiac DegreeZodiac degree coordinate
- 185° Zodiac DegreeZodiac degree coordinate
- 186° Zodiac DegreeZodiac degree coordinate
- 187° Zodiac DegreeZodiac degree coordinate
- 188° Zodiac DegreeZodiac degree coordinate
- 189° Zodiac DegreeZodiac degree coordinate
- 190° Zodiac DegreeZodiac degree coordinate
- 191° Zodiac DegreeZodiac degree coordinate
- 192° Zodiac DegreeZodiac degree coordinate
- 193° Zodiac DegreeZodiac degree coordinate
- 194° Zodiac DegreeZodiac degree coordinate
- 195° Zodiac DegreeZodiac degree coordinate
- 196° Zodiac DegreeZodiac degree coordinate
- 197° Zodiac DegreeZodiac degree coordinate
- 198° Zodiac DegreeZodiac degree coordinate
- 199° Zodiac DegreeZodiac degree coordinate
- 200° Zodiac DegreeZodiac degree coordinate
- 201° Zodiac DegreeZodiac degree coordinate
- 202° Zodiac DegreeZodiac degree coordinate
- 203° Zodiac DegreeZodiac degree coordinate
- 204° Zodiac DegreeZodiac degree coordinate
- 205° Zodiac DegreeZodiac degree coordinate
- 206° Zodiac DegreeZodiac degree coordinate
- 207° Zodiac DegreeZodiac degree coordinate
- 208° Zodiac DegreeZodiac degree coordinate
- 209° Zodiac DegreeZodiac degree coordinate
- 210° Zodiac DegreeZodiac degree coordinate
- 211° Zodiac DegreeZodiac degree coordinate
- 212° Zodiac DegreeZodiac degree coordinate
- 213° Zodiac DegreeZodiac degree coordinate
- 214° Zodiac DegreeZodiac degree coordinate
- 215° Zodiac DegreeZodiac degree coordinate
- 216° Zodiac DegreeZodiac degree coordinate
- 217° Zodiac DegreeZodiac degree coordinate
- 218° Zodiac DegreeZodiac degree coordinate
- 219° Zodiac DegreeZodiac degree coordinate
- 220° Zodiac DegreeZodiac degree coordinate
- 221° Zodiac DegreeZodiac degree coordinate
- 222° Zodiac DegreeZodiac degree coordinate
- 223° Zodiac DegreeZodiac degree coordinate
- 224° Zodiac DegreeZodiac degree coordinate
- 225° Zodiac DegreeZodiac degree coordinate
- 226° Zodiac DegreeZodiac degree coordinate
- 227° Zodiac DegreeZodiac degree coordinate
- 228° Zodiac DegreeZodiac degree coordinate
- 229° Zodiac DegreeZodiac degree coordinate
- 230° Zodiac DegreeZodiac degree coordinate
- 231° Zodiac DegreeZodiac degree coordinate
- 232° Zodiac DegreeZodiac degree coordinate
- 233° Zodiac DegreeZodiac degree coordinate
- 234° Zodiac DegreeZodiac degree coordinate
- 235° Zodiac DegreeZodiac degree coordinate
- 236° Zodiac DegreeZodiac degree coordinate
- 237° Zodiac DegreeZodiac degree coordinate
- 238° Zodiac DegreeZodiac degree coordinate
- 239° Zodiac DegreeZodiac degree coordinate
- 240° Zodiac DegreeZodiac degree coordinate
- 241° Zodiac DegreeZodiac degree coordinate
- 242° Zodiac DegreeZodiac degree coordinate
- 243° Zodiac DegreeZodiac degree coordinate
- 244° Zodiac DegreeZodiac degree coordinate
- 245° Zodiac DegreeZodiac degree coordinate
- 246° Zodiac DegreeZodiac degree coordinate
- 247° Zodiac DegreeZodiac degree coordinate
- 248° Zodiac DegreeZodiac degree coordinate
- 249° Zodiac DegreeZodiac degree coordinate
- 250° Zodiac DegreeZodiac degree coordinate
- 251° Zodiac DegreeZodiac degree coordinate
- 252° Zodiac DegreeZodiac degree coordinate
- 253° Zodiac DegreeZodiac degree coordinate
- 254° Zodiac DegreeZodiac degree coordinate
- 255° Zodiac DegreeZodiac degree coordinate
- 256° Zodiac DegreeZodiac degree coordinate
- 257° Zodiac DegreeZodiac degree coordinate
- 258° Zodiac DegreeZodiac degree coordinate
- 259° Zodiac DegreeZodiac degree coordinate
- 260° Zodiac DegreeZodiac degree coordinate
- 261° Zodiac DegreeZodiac degree coordinate
- 262° Zodiac DegreeZodiac degree coordinate
- 263° Zodiac DegreeZodiac degree coordinate
- 264° Zodiac DegreeZodiac degree coordinate
- 265° Zodiac DegreeZodiac degree coordinate
- 266° Zodiac DegreeZodiac degree coordinate
- 267° Zodiac DegreeZodiac degree coordinate
- 268° Zodiac DegreeZodiac degree coordinate
- 269° Zodiac DegreeZodiac degree coordinate
- 270° Zodiac DegreeZodiac degree coordinate
- 271° Zodiac DegreeZodiac degree coordinate
- 272° Zodiac DegreeZodiac degree coordinate
- 273° Zodiac DegreeZodiac degree coordinate
- 274° Zodiac DegreeZodiac degree coordinate
- 275° Zodiac DegreeZodiac degree coordinate
- 276° Zodiac DegreeZodiac degree coordinate
- 277° Zodiac DegreeZodiac degree coordinate
- 278° Zodiac DegreeZodiac degree coordinate
- 279° Zodiac DegreeZodiac degree coordinate
- 280° Zodiac DegreeZodiac degree coordinate
- 281° Zodiac DegreeZodiac degree coordinate
- 282° Zodiac DegreeZodiac degree coordinate
- 283° Zodiac DegreeZodiac degree coordinate
- 284° Zodiac DegreeZodiac degree coordinate
- 285° Zodiac DegreeZodiac degree coordinate
- 286° Zodiac DegreeZodiac degree coordinate
- 287° Zodiac DegreeZodiac degree coordinate
- 288° Zodiac DegreeZodiac degree coordinate
- 289° Zodiac DegreeZodiac degree coordinate
- 290° Zodiac DegreeZodiac degree coordinate
- 291° Zodiac DegreeZodiac degree coordinate
- 292° Zodiac DegreeZodiac degree coordinate
- 293° Zodiac DegreeZodiac degree coordinate
- 294° Zodiac DegreeZodiac degree coordinate
- 295° Zodiac DegreeZodiac degree coordinate
- 296° Zodiac DegreeZodiac degree coordinate
- 297° Zodiac DegreeZodiac degree coordinate
- 298° Zodiac DegreeZodiac degree coordinate
- 299° Zodiac DegreeZodiac degree coordinate
- 300° Zodiac DegreeZodiac degree coordinate
- 301° Zodiac DegreeZodiac degree coordinate
- 302° Zodiac DegreeZodiac degree coordinate
- 303° Zodiac DegreeZodiac degree coordinate
- 304° Zodiac DegreeZodiac degree coordinate
- 305° Zodiac DegreeZodiac degree coordinate
- 306° Zodiac DegreeZodiac degree coordinate
- 307° Zodiac DegreeZodiac degree coordinate
- 308° Zodiac DegreeZodiac degree coordinate
- 309° Zodiac DegreeZodiac degree coordinate
- 310° Zodiac DegreeZodiac degree coordinate
- 311° Zodiac DegreeZodiac degree coordinate
- 312° Zodiac DegreeZodiac degree coordinate
- 313° Zodiac DegreeZodiac degree coordinate
- 314° Zodiac DegreeZodiac degree coordinate
- 315° Zodiac DegreeZodiac degree coordinate
- 316° Zodiac DegreeZodiac degree coordinate
- 317° Zodiac DegreeZodiac degree coordinate
- 318° Zodiac DegreeZodiac degree coordinate
- 319° Zodiac DegreeZodiac degree coordinate
- 320° Zodiac DegreeZodiac degree coordinate
- 321° Zodiac DegreeZodiac degree coordinate
- 322° Zodiac DegreeZodiac degree coordinate
- 323° Zodiac DegreeZodiac degree coordinate
- 324° Zodiac DegreeZodiac degree coordinate
- 325° Zodiac DegreeZodiac degree coordinate
- 326° Zodiac DegreeZodiac degree coordinate
- 327° Zodiac DegreeZodiac degree coordinate
- 328° Zodiac DegreeZodiac degree coordinate
- 329° Zodiac DegreeZodiac degree coordinate
- 330° Zodiac DegreeZodiac degree coordinate
- 331° Zodiac DegreeZodiac degree coordinate
- 332° Zodiac DegreeZodiac degree coordinate
- 333° Zodiac DegreeZodiac degree coordinate
- 334° Zodiac DegreeZodiac degree coordinate
- 335° Zodiac DegreeZodiac degree coordinate
- 336° Zodiac DegreeZodiac degree coordinate
- 337° Zodiac DegreeZodiac degree coordinate
- 338° Zodiac DegreeZodiac degree coordinate
- 339° Zodiac DegreeZodiac degree coordinate
- 340° Zodiac DegreeZodiac degree coordinate
- 341° Zodiac DegreeZodiac degree coordinate
- 342° Zodiac DegreeZodiac degree coordinate
- 343° Zodiac DegreeZodiac degree coordinate
- 344° Zodiac DegreeZodiac degree coordinate
- 345° Zodiac DegreeZodiac degree coordinate
- 346° Zodiac DegreeZodiac degree coordinate
- 347° Zodiac DegreeZodiac degree coordinate
- 348° Zodiac DegreeZodiac degree coordinate
- 349° Zodiac DegreeZodiac degree coordinate
- 350° Zodiac DegreeZodiac degree coordinate
- 351° Zodiac DegreeZodiac degree coordinate
- 352° Zodiac DegreeZodiac degree coordinate
- 353° Zodiac DegreeZodiac degree coordinate
- 354° Zodiac DegreeZodiac degree coordinate
- 355° Zodiac DegreeZodiac degree coordinate
- 356° Zodiac DegreeZodiac degree coordinate
- 357° Zodiac DegreeZodiac degree coordinate
- 358° Zodiac DegreeZodiac degree coordinate
- 359° Zodiac DegreeZodiac degree coordinate
Sources and editorial basis
- Swiss Ephemeris 2.10 DocumentationSwiss Ephemeris 2.10 manual, chapters 2 “The Ephemerides”, 6 “Sidereal Time, Ascendant, MC, Houses, Vertex”, and 7 “Delta T”, pages 5–64Public technical documentation for ephemerides, time conversions, sidereal time, apparent positions, houses, nodes, and Delta T; software policy and version must still be disclosed.
- NCGR-PAA Level II CurriculumNCGR-PAA Level II Curriculum PDF, Part 1 “Astronomy and Chart Calculations” and Part 2 “Delineation and Synthesis”, sections 1–9A professional astrology curriculum covering astronomy, chart calculation, house systems, dignity, rulership, transits, progressions, and synthesis; it records practice standards rather than empirical proof.