Calvin Barnes was born on April 10, 1972 and was murdered on April 10, 1998, his 26th birthday.
Gharty brings a can of cola to a suspect being questioned in The Box. The can is labeled Shyster Cola.
This episode takes place from April 10 to April 11, 1998.
When Gharty asks about Munch's previous romantics with the M.E., Munch mentions a "short round man he once worked with" being annoying. Munch is talking about Stan Bolander who left the show after season 3.