I made a chart for checking the age at which Sedna goes Rx or Direct by Progression in a chart.
To use it, look for the birth year on the far left of the chart under the columns ‘Sedna Rx’ and ‘Sedna Direct’.
If the birth date falls in the date range for progressed Sedna going Rx, look up the date in the columns on the left side of the chart.
If the birth date falls in the date range for progressed Sedna going Direct, look up the date in the columns on the right side of the chart - you need to scroll over a bit.
If the birth date doesn’t fall within one of the two ranges, Sedna won’t change directions in the chart by progression unless the person lives past 105 years.