Breakdown of Sutra navečer imamo roditeljski sastanak u školi.
Questions & Answers about Sutra navečer imamo roditeljski sastanak u školi.
It means tomorrow evening.
- sutra = tomorrow
- navečer = in the evening / this evening period
Together, they form a time expression: sutra navečer = tomorrow evening.
Croatian often uses navečer as an adverb, so this is a very natural way to say when something happens.
Because navečer is an adverb, while večer is a noun.
- večer = evening
- navečer = in the evening
In this sentence, you need an adverbial time phrase, not just the noun evening by itself. So sutra navečer sounds natural, while sutra večer is not the standard way to express tomorrow evening here.