16 October is the 289th day of the year (290th in leap years). There are 76 days remaining.
- 1991: The Gryffindor first-years have an Astronomy Class at midnight, on the top of the Astronomy Tower.
- 1993: Lavender Brown gets news that her pet rabbit, Binky, was killed by a fox. Coincidentally, this was one of the predictions made by Divination professor, Sybill Trelawney, on their first ever Divination class. The Third year Gryffindors and Hufflepuffs have Herbology class together. Professor Sprout has them harvest Puffapod beans. However, the book mentions that the 16th was a Friday, when it was, in reality, a Saturday.