I've updated my blog to include the e-mail from Janice Okubo confirming that they assign birth certificate numbers in the state registrar's office and the day they do that is the "Date filed by state registrar". The pertinent portion from Okubo's e-mail: In regards to the terms “date accepted” and “date filed” on a Hawaii birth certificate, the department has no records that define these terms. Historically, the terms “Date accepted by the State Registrar” and “Date filed by the State Registrar” referred to the date a record was received in a Department of Health office (on the island of...