This is the 443rd most frequent Lithuanian word.
birželio
"Birželio" means "June" in English.
The word 'birželio' is used here as a genitive case of 'birželis,' indicating possession: evenings of June.
Birželio vakarais saulė leidžiasi vėlai.
In June evenings, the sun sets late.
Here, 'birželio' describes 'mėnesį' (month) in the genitive case to specify which month.
Mes susitiksime birželio mėnesį Vilniuje.
We will meet in June in Vilnius.
'Birželio' is used in the genitive case to specify the timeframe within a sentence involving dates.