DateTimeFormatInfo.AbbreviatedMonthGenitiveNames
using System; using System.Globalization; class Sample { public static void Main() { string[] myDateTimePatterns = new string[] {"MM/dd/yy", "MM/dd/yyyy"}; CultureInfo ci = new CultureInfo("en-US"); DateTimeFormatInfo dtfi = ci.DateTimeFormat; foreach (string name in dtfi.AbbreviatedMonthGenitiveNames) { Console.WriteLine("\"{0}\"", name); } } } /* "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" "" */