Da and Når both mean “When” so how do you know when to use “Da” and when to use “Når”. Here are the rules…
Da:
We use “Da” when we refer to a definite point in time or period in the past. For example:
Når:
We use Når for a point of time in the future. For example:
Når jeg har spart nok prenger, skal jeg reise på ferie = When I have spare money, I shall travel on holiday
We also use Når
A New Life In Norway 
In language class I was taught a useful way of remembering which of these to use: “En gang da, hver gang når”.
By: currywuss on October 27, 2009
at 1:45 PM
Brilliant – what a great saying – must remember! We’re starting berlitz lessons next week…I’m hoping for a marked improvement!
By: sarahgoodall on November 4, 2009
at 10:24 PM
Have you seen DNB’s new advertising campaign? Bank fra DA til NÅ :)
By: David on December 17, 2011
at 3:44 PM
Hey David – I haven’t seen it. Do you have a YouTube link? I tried searching for it but couldn’t find it.
By: Sarah on December 18, 2011
at 5:59 PM