I assume en is used instead of ett because the noun dag is an en word even though in this sentence it is in the plural.
Exactly. In the same way you would say "Det tar ett eller två dygn" since dygn is an ett-word (ett dygn = en dag + en natt).
Thank you for defining dygn. I learn so much from these little comments
Is one the only number that changes depending on if the word is an en-word or an ett-word?
is the TTS correct here? seems to me that "en" should have more stress. could a native speaker please comment on that? tack!
Nope, definitely not correct. I'll mark it for later re-recording. Thanks!
How do I say "day one" in Swedish? Is it "dag en" or "dag ett"? Is there some rule or does the word take its article (so it would become "dag en")? Tack!