Favourable dates are 2-11-20-29. Cheiro has stated that 4-13-22-31 are auxiliary dates. It is true that many incidents happen on these dates but Rahu and Kethu are apart. They cannot mix to easily. The occurrence of incidents cannot be confused with the lucky dates. The dates 7 and 25 are good. But 16 is not so good. Sun and Venus do not agree well. Sun is debilitated in the natural 7th house where Venus owns and Saturn is in exaltation.