This is the 5205th most frequent Polish word.
późnym
"Late" (in the sense of occurring at a late time).
The word 'późnym' is used as an adjective in the instrumental case modifying 'wieczorem' (evening), describing the time of the evening.
Spotkaliśmy się w późnym wieczorem.
We met in the late evening.
Here 'późnym' is part of the phrase 'późnym godzinom,' where it acts as an adjective in the dative case connected with 'godzinom' (hours) indicating the temporal context.
Pomimo późnym godzinom, nadal pracował.
Despite the late hours, he was still working.
In this sentence, 'późnym' modifies 'popołudniu' (afternoon), serving as an adjective in the instrumental case to express the specific time frame for the action.