Precision note: all result times are UTC and based on geocentric tropical ecliptic longitudes. Aspect Research now uses the Swiss Ephemeris research endpoint by default.
Retrogradation research beta
Search retrograde periods for moving planets. Sun and Moon are intentionally excluded because they do not have geocentric retrograde periods in this context.
Multi-aspect research beta
Iteration 10: grouped overlap search with AND/OR logic, duplicate protection, self-aspect protection, visual progress, titled result blocks, mouse-over search details, optional tropical/sidereal sign criteria, and Swiss Ephemeris research precision by default. Different groups are combined with AND; rows sharing the same group are combined with OR.
