From: Dave Walden
Date: 2020 Apr 11, 20:38 -0700
After seeing Antonie's discussion, I used the Sun Ha values to calculate my own Ho's. (The late Stan Kline's program was used.) The revised Sun Ho for 1215 was 32d 24.17'. It resulted in a position of 60d 10.2' N, 29 47.3 E. Much better.
The differences between my Sun Hc and yours in minutes are: