This is the 2986th most frequent Russian word.
днях
"Днях" means "days" (in the context of certain or recent days).
In this sentence, 'днях' is used as part of the phrase 'На днях', which means 'the other day', referring to a recent past event.
На днях я видел старого друга.
The other day, I saw an old friend.
Here, 'днях' is used in the phrase 'в следующих днях', meaning 'in the coming days', pointing to the near future.
Мы поговорим об этом в следующих днях.
We will talk about this in the coming days.
'Днях' appears in the context 'в последние дни', referring to the recent days in the past, indicating a timeframe.