Thank you for your question.
You are absolutely right about the date. The law demands notice to be given on the first weekday in the month, which is not the day before a holiday, according to the law’s § 36. However, by default the standard contract for renting an apartment cannot be terminated by the landlord, only by the tenant. So, in my opinion you may not have to move at all, because the landlord’s termination most likely is illegal.
I will recommend you to seek legal guidance, or help, from the nearest
tenant association.
Best of luck to you.
Venlig hilsen
Martin G. Laursen
Sagsbehandler