1967
In 1999.
Where you were born is irrelevant. In 2017 (now) you would be 64 years old if you have had your birthday this year, otherwise you are 63.
Congress convenes on January 5 of odd number years. The start of the next Congress is January 3, 2017.
People turning 21 in 2017 were born in 1996
Subtract 20-2017. Easy you should be able to figure that out at 20 years old.
1996 + 21 = 2017
Prior to 2017, the last year it fell on Sunday was in 2012 and the next time will be in 2023.
In 2017
If you were born in 1999 you would graduate from high school in the year of 2017.
1997 was 20 years before 2017.
You were born in 1947 if you have had your birthday in 2017, or else 1946.
To reach your 13th birthday in 2017 - you would have had to be born in 2004.