Both formats are generally considered correct, but the second format, "Tuesday, November 1st, 2011," is more commonly used in formal writing and publications. This format includes a comma after the day of the week and another comma after the day of the month. The purpose of these commas is to improve readability and help separate the different components of the date. However, in less formal writing, such as informal emails or personal notes, it is also acceptable to skip the second comma and use the first format, "Tuesday November 1st, 2011."
