De or het feedbackdag?

The correct Dutch article is:

de feedbackdag

This word is not in the word lists we use to double-check answers.

How to use feedbackdag

the feedbackdagde feedbackdag
this feedbackdagdeze feedbackdag
that feedbackdagdie feedbackdag
our feedbackdagonze feedbackdag
your feedbackdagjouw feedbackdag
every feedbackdagelke feedbackdag
which feedbackdag?welke feedbackdag?
a big feedbackdag / the big feedbackdageen grote feedbackdag, de grote feedbackdag