In informal notes, official forms, invoices etc, people sometimes use an all-figure form of the date, for example, 12.9.94. Do not use this form in international contexts, because British and American practice is different. So, while in Britain 2.9.94. would be read as the second of September 1994, in the USA it would be read as the ninth of February 1994. If you meet an all-figure form of the date in an international context, be aware that it is likely to need the American interpretation.
Material produced on a computer often has an all-figure form of the date.
Note that in this the numbers 1 to 9 are preceded by zero, and only the last two digits of the year are used. However, many computer programs are designed in the USA, and some automatically put the day's date on a document. In this case it will be the American form, with month before day, unless you change it. In cases such as the last example, where the century comes before a noun, hyphens are used by some British writers, but the current trend is towards the American practice of leaving them out. There are two ways of referring to a decade .