That kind of phrasing is boilerplate for indictments. It's used even in the most nailed-down circumstances. Here's a bit from Zacarias Moussaoui's indictment fo

That kind of phrasing is boilerplate for indictments. It's used even in the most nailed-down circumstances. Here's a bit from Zacarias Moussaoui's indictment for 9/11 [0]: > On or about September 11, 2001, Saeed al-Ghamdi, Ahmed al-Nami, Ahmed al-Haznawi, and Ziad Jarrah hijacked United Airlines Flight 93, a Boeing 757, which had departed from Newark, New Jersey bound for San Francisco at approximately 8:00 a.m. After resistance by the passengers, Flight 93 crashed in Somerset County, Pennsylvania at approximately 10:10 a.m., killing all on board. I mean, if they're being careful about the date of that, they'll do it for all dates. (Curiously, though, the very next paragraph in that indictment doesn't use the "on or about" qualifier.) [0] https://www.justice.gov/archives/ag/indictment-zacarias-moussaoui https://www.justice.gov/archives/ag/indictment-zacarias-mous...