The next dividend payment date for any company's stock varies depending on the date that has been set by the company. In addition a payment date, companies also set an ex-dividend rate after which any stocks that are purchased do not receive a dividend.
Investors who wish to receive a divided on a company's payment date must purchase a company's stock prior to the pre-established ex-dividend date. Conversely, stockholders who sell their stock after the ex-dividend date has passed still retain the right to receive a payment on the amount of stock they had prior. Stock prices generally decrease slightly on the ex-dividend date at approximately the same value as the amount of dividends being paid out.