def METHOD_NAME(self):
    """
    Class - `Issues`
    Example:
    ```
    repository = github.Issue(username="nikhil25803", repository_name="scrape-up", issue_number=59)
    opened_at = repository.opened_at()
    ```
    Returns: Opened at | None
    """
    try:
        data = self.__scrape_page()
        return data.find("relative-time").text
    except:
        return None