Ghadi is an ancient measure for calculations of time in India roughly equivalent to 24 minutes. Cho-ghadiya means four ghadi which totals to 96 minutes. Most of chaughadiya are of a figure around 96 minutes.
There are totally seven types of Choghdiya.
Amrit, Shubh and Labh are considered the most auspicious Chaughadiyas.
Udveg, Kal and Rog is considered inauspicious Chaughadiyas.