The year 2017 can be read as tjuesytten (twenty seventeen) or as totusenogsytten (two thousand and seventeen).
There should not be any preposition in front of a date:
Bens mor er født første september nittenførtiåtte (1.9.1948).
Ben’s mother is born on the first of September nineteen fourty-eight.
Cecilie sender en pakke tiende august (10.08.).
Cecilie sends a parcel on the tenth of August.
We can use different combinations of digits.
The full stops used as separators also indicate that the preceding numbers are Ordinals and should be read as Ordinals.
This means that months too can be ranged with Ordinals according to which place in the year they take: January is the first month, February the second, October the tenth and so on.
The following dates 1.9.17 / 1.9.2017 / 01.09.2017 can then be read in two different ways:
1) første september tjuesytten
first of September twenty seventeen
or
2) (den) første i niende tjuesytten
(the) first (day) in the ninth (month) twenty seventeen
NB:
Notice the preposition i in option number 2
The definite article den is optional.
Examples:
Når er du født Dina?
When are you born, Dina?
Jeg er født 24.09.2002
tjuefjerde september totusenogto
(den) tjuefjerde i niende totusenogto
Now, your turn:
Når er du født?
Jeg er født 31. juli.
Du kan si og skrive dette på fire ulike måter:
You can say and write this in four different ways: