using System; using System.Globalization; using System.Linq; namespace ConsoleApp1 { class Program { static void Main(string[] args) { var cultures = CultureInfo.GetCultures(CultureTypes.AllCultures); foreach (var culture in cultures.OrderBy(x => x.EnglishName)) { if (!culture.DateTimeFormat.FullDateTimePattern.Contains("dddd")) { Console.WriteLine("{0} ({1}): {2}", culture.EnglishName, culture.Name, culture.DateTimeFormat.FullDateTimePattern); } } } } }