"What is a Record Date for a dividend? The Record Date is the day on which the company's transfer agent compiles a list of those persons having shares registered in their names."
"What is an ex-dividend date? An ex-dividend date is the first day on which a security is traded without rights to a particular distribution. It is on the ex-dividend date that a security price is adjusted to reflect the dividend."
Basically, as shown, a "record date" is a bookkeeping "trigger" for the TA to get hedzup. Bottom line, though, is the ex-date. Literally, ex-dividend means "without dividend."