If you're not including 396 or 1999 but only the years between them, then there are 1999-396-1 or 1602 years
There were 1603 years between 396 CE (AD) and 1999 CE (AD).
1999: there was no year 0.
it is 36 years between 1968 and 2004
There are 23 years between 1988 and 2011.
24 + 19 = 43
If you're not including 396 or 1999 but only the years between them, then there are 1999-396-1 or 1602 years
13 years
21 years.
1020 would be 999 years ago if its now 2019
There were 1603 years between 396 CE (AD) and 1999 CE (AD).
There are 13 leap years during that period:2000200420082012201620202024202820322036204020442048
1999: there was no year 0.
2019
duh...13
1thousand years ago
That depends on the make, but not likely with that many years in between.