D.C. grandfathered the transition from 21 to 18, setting August 1968 birthdate as the cutoff.
This meant that someone who was born in August 1968 or before could drink in Georgetown bars in 1987. My liver can attest to benefitting from this particular quirk.
Ya I graduated at 16 in 1975- my senior friends flew into the District and accomplished much.
My dad was relocating so I went to summer school to avoid last year in strange location. So no was more circumspect than wise...
The 3 year jump on cirrhosis may become statistically relevant someday soon...