writing, i often find myself in the harry potter wiki etc... and one thing I noticed is- JK'S MATH IS WORSE THAN HER PERSONALITY-
there are people who got pregnant at 12, over 3 different canon dates for the same event, random dates added that just don't fit the timeline, dudley has a PlayStation before it came in Britain (or in Europe actually), the Potters' death day, the students she claims to exist are far off the numbers we see- AND TRYING TO NOT MAKE A MISTAKE WHILE WRITING IS DRIVING ME INSANE