Find the moment the Sun returns to its natal longitude, then explore the chart for the place you choose.
Enter the time shown in the birth record. The time zone comes from the location.
City search selects its center. For an exact birth location, choose the hospital on the map.
Search: © OpenStreetMap contributors · Photon
Select the year of the birthday. The return can fall on a different calendar day, including the previous December for an early January birthday.
The place sets the return ASC, MC and houses. It does not change the geocentric return moment or planetary longitudes.
NASA data used to calculate planetary positions.
How far from the exact angle an aspect may be. Lower values show fewer aspects.
Optional: calculate with both DE441 and DE442 to check their differences.
The solver matches apparent geocentric tropical solar longitude at the return with the natal value. Each longitude uses the true ecliptic and equinox of its own date.
Return houses use Placidus at the selected place and return instant. Undefined polar houses produce an explicit error.