This is the 153rd most frequent Swedish word.
dagar
"Days"
The word 'dagar' refers to a duration of time in this context, specifically to the span of three days.
Jag har varit här i tre dagar.
I have been here for three days.
Here, 'dagar' signifies specific instances of days, marked by the mentioned characteristic of having sunshine.
Det är fantastiska dagar med solsken.
These are wonderful days of sunshine.
In this example, 'dagar' describes specific, categorically similar days that are highlighted for resembling the current day's situation.