This is the 156th most frequent Danish word.
tirsdag
"Tuesday."
The word 'tirsdag' is being used as a noun to specify a particular day in the week.
Min yndlingsdag i ugen er tirsdag.
My favorite day of the week is Tuesday.
Here, the word 'tirsdag' is used as a time reference to indicate the day of the week.
Jeg tager til byen på tirsdag.
I am going to the city on Tuesday.
In this sentence, 'tirsdag' acts as the subject of the clause, representing the day that is being described.