By default, the MonthNames is "January February March April May June July August September October November December". For instance, for French you have to use something like: "Janvier Février Mars Avril Mai Juin Juillet Août Septembre Octobre Novembre Décembre". Use the FirstWeekDay property to change the first day of the week. Use the WeekNames property to define the name for each week day. LocMonthNames property specifies the list of name of the months, using the current user regional and language settings.