Since your date column doesn't exist, there's no point in ordering by it. Also, you're exposed to SQL injection in the case where $_SESSION['email'] is not secured.
So, the correct form would be to use prepared statements, as well as order by the right column. (assuming PDO, you can use mysqli as well):
/** @var PDO $pdo - Assuming a PDO connection. */
$query = "SELECT * FROM `user` WHERE `ID` = :email ORDER BY `time` DESC";
$stmt = $pdo->prepare($query);
$stmt->execute(array($_SESSION['email']));
$result = $stmt->fetchAll(PDO::FETCH_ASSOC); //Get all results in an associated array form.
