equation that will calculate the second Monday of the following month from a given date


I am seeking an equation that will calculate the second Monday of the following month from a given date, and I will adjust it to figure the same for 3rd, 6th, 9th, 11th, and 12th month. We do a mail-out to the family of deceased clients on the second Monday of each month. I need to return a list of names of those who should receive the mail-out based on date of death.