The date:
Like you said 3+19+1994 = 2016
if you drop the zero, you have 216, or the product of 6*6*6
Also:
3/19/1994 = 3+1+9+1+9+9+4 = 36
3 6 = Triple 6 = 6 6 6
And
The sum of the first 36 integers (If you sum up 1+2+3…+34+35+36) = 666 !
And
3/19/94
3+19+94 = 116 or 911 upside down