In Muhurta Astrology, Kaal Dand Yoga is representing the inauspicious time or evil muhurta. Kaal Dand Yoga is made from a combination of Vedic Var and Nakshatra. So, Kaal Dand Yoga is one of the Ashubha Yoga forms with Var & Nakshatra.
Mercury is the natural karaka of business and Saturn is the natural karaka of the profession. So, Mercury and Saturn conjunction in 1st house is indicating, that the native may be an expert in business or trading activity. He knows all sorts of tricks to run a business. Such as he can twist any matters for his own profits. He may acquire commercial land.