The "Issue Date" refers to the specific date on which a document, such as a passport, license, or financial statement, is officially released or made valid. This date is important because it often marks the beginning of the document's validity period and can affect its expiration or renewal requirements. In the context of bonds or securities, the Issue Date is when the financial instrument is made available to investors. This date is crucial for determining interest accrual and the timeline for repayment. Understanding the Issue Date helps individuals and organizations manage their documents and investments effectively.