Mathematical fact: 994 is the smallest number with the property that its first 18 multiples contain the digit 9.
Trivia: 994 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: September 20th is the day in 1906 that Cunard Line's RMS Mauretania is launched at the Swan Hunter & Wigham Richardson shipyard in Newcastle upon Tyne, England.