Determinatives / Determinativ

3.18 Dates and Eras

Dates are written like this:  day.month.year
For example: July 4, 1999 =  4. juli 1999 = 04.07.1999

NB!  No comma between month and year.

This date would be read:
fjerde juli nittennittini  or  fjerde i sjuende nittennittini

Språkrådet (The Norwegian Language Council) used to recommend that dates beginning in 2000 be read:  2003 = totusenogtre.
In recent years, however, it has become more common to read them thusly:  2013 = tjuetretten.

Here are the names of the months, along with the ordinal numbers used to refer to them:

Eras and Ages

et tiår = a decade

et århundre / et hundreår = a century

i det 20. århundre = in the twentieth century

på 1900-tallet = in the 1900s (more commonly used in Norwegian than “i det 20. århundre”)

i 20-årene (in the 1920s)

Han er en mann i 20-årene (a man in his twenties)

Jeg har en datter på 17 år. (a 17-year old daughter)