Question 1063354

I was born on march 20th 1956.  My child was born July 27th, 1986.  What date will I be exactly twice my child' age?  
<pre>Difference in ages: 30 years
Date that you were exactly twice his/her age: {{{highlight_green(matrix(1,3, July, 27^(th), 2016))}}}
On this date, you  had already celebrated your 60th b'day, but your child celebrated his/her 30th b'day.