✔ 最佳答案
only this year is a double black day because it is a friday the 13th and it is the second one of the year another reason would be the numbers of this day adding th year mounth and date and you'll find it adds up to 13 which is a unluky number to many people 2+0+0+6+1+0+1+3=13and thats all I know about it.