About date formats

What date format is considered “official” or well-written language in your language?

In Finnish this is d.m.yyyy i.e. order of the date components is day, month, year. Day and month are without leading zero and year is 4-digit. Separator is a dot and there’s no space between the dot and the next number.

I just noticed that the Finnish Standars Association SFS has changed the recommendation on this last year. Previously they recommended the use of ISO 8601 dates and now SFS 4175:2006 says that such dates should be used only in data transfer and multilingual documents. I’m not shure why they changed this but I guess it’s because after 30 years of recommending hardly any actually used the ISO format. I would still vote for the ISO format because other formats are ambiguous in international context. And with Internet, the context is often international.

Ville
13.11.2007 (previously would have been 2007-11-13)

Is Serbian the format is dd.mm.yyyy. We put "." also after yyyy. There shouldn't be used "0" before 3,4,5,6,7,8 and 9 in mm because there is not 13. or 25. month but many people make this mistake.
For example: 17.01.2008. 17.02.2008. but 17.3.2009. 17.7.2008. 17.12.2008.
Sometimes we use Roman numbers instead of Arabic for month.
Example: 17.II 2008. 17.XII 2008.
We don't write "." after Roman numbers.
In many cases I saw people writing 17.II-2008. or 17.XII-2008. but I'm not sure if this if right.
Roman numbers can be used also when it's mentioned only the year.
Example: Production: MMVIII

In the Netherlands it is usually 10 juni 2009, or in numbers it is 10-6-2009, although you can add an 0 in front of the 6, or write '09 as the year.