c# selenium program to handle calendars

SeleniumCalendarExample.cs

 public class SeleniumCalendarExample {
        public static void Main(string[] args)
        {
            new DriverManager().SetUpDriver(new EdgeConfig());
            var driver = new EdgeDriver();

            driver.Manage().Window.Maximize();

           driver.Navigate().GoToUrl("https://jqueryui.com/datepicker/#date-range");

            driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(5);


            var frame_element = driver.FindElement(By.XPath("//*[@id='content']/iframe"));

            driver.SwitchTo().Frame(frame_element);

            var from_element = driver.FindElement(By.XPath("//input[@id='from']"));

            from_element.Click();

            var month_element = driver.FindElement(By.XPath("//select[@class='ui-datepicker-month']"));

            var month_select = new SelectElement(month_element);

            //var month = DateTime.Now.Month;

            month_select.SelectByText("Aug");

            var Day = DateTime.Now.Day -1;

            Console.WriteLine("Current Day : " + Day);

            var date_element = driver.FindElement(By.XPath($"//table/tbody/tr/td/a[text()='{Day}']"));

            date_element.Click();

            }
    }