Questions & Answers about V pondělí pracuji celý den.
In Czech, v literally means in, but with days of the week it corresponds to English on:
- v pondělí – on Monday
- v úterý – on Tuesday
- v pátek – on Friday
So the natural way to say “on Monday” is v pondělí, not na pondělí.
Na + day is used for different meanings, for example:
- Mám to naplánované na pondělí. – I have it planned for Monday.
(a deadline / target day, not just “on Monday”)
So for simple time expressions “on Monday”, “on Tuesday”, you use v + [day].
In v pondělí, the noun pondělí is in the locative case.
- The preposition v (“in/on”) normally takes locative for static position in space or time.
- However, the noun pondělí is a neuter noun ending in -í, and for these nouns many cases have the same form as the nominative.
So:
- Nominative: pondělí (Monday)
- Locative: v pondělí (on Monday) – the form looks identical
You can see that it really does decline when used with a different preposition:
- do pondělí – until Monday (genitive)
- od pondělí – from Monday (genitive)
So: grammatically, it’s locative; it just happens to look the same as the basic form.