Final answer:
The best way to express a date in a memo is in the style of your company or following the date format customary in the recipient's country, with no abbreviation of the month.
Step-by-step explanation:
The best way to express a date in a memo is dependent on the style of your company and the location of the recipient. Ordinarily, when writing a memo or any official communication, it is essential to follow the date format that is conventional within the company or organization. If there is no specific company style, the preferred format often takes into consideration the recipient: in the United States, it is customary to use "January 2, 2014", whereas in Europe, one would write "2 January 2014". The month should not be abbreviated in any date format, and a blank line should follow the date for clarity.