I'm a novice astrologer. Can somebody please tell me how to calculate
the positions of Mandi And Gulika in a Horoscope. I'm looking for the
procedure for the calculation.
Before doing the calculations for these points les know what they are - they are supposed to be the sons of Saturn, and like this the other planets also have children. In Jyotish children refer to a part or amsa of the parent. So if the parent can have different definitions then the children will also be defined differently and there can be many.
Now of the time scales, one of them is called a kala and this divides the day into 16 parts - more specifically 8 parts for day and 8 parts for night. Think of the number '8' and the 8th house of transformation, past karma catching up and such things. The children of the planets when they rule such parts will be doig their job related to the 8th house. For example, the son of Saturn called Gulika is responsible for our birth and plays a crucial role in adhana (conception time calculation) as we are born due to our sins (Saturn) and Gulika is the poison we must consume in this life as a burning for our sins.
The rest you can get from standard texts.
With best wishes and warm regards,