Shares purchased on ex dividend date

No, an investor is not eligible for a dividend if they purchase shares on the ex-dividend date or after. 

When an investor buys shares of a company, there is a settlement period that takes place between the buyer and seller. This settlement period is usually two business days after the trade date. This means that if an investor purchases shares on or after the ex-dividend date, the settlement date will occur after the record date, and they will not be eligible to receive the dividend.

but now does the settlement period is moved to t+1 days ???