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September

In a sentence
Septembrové dni už bývajú citeľne kratšie.
Days in September are already noticeably shorter.
Septembrový vietor už prináša chlad.
The September wind already brings cold.
Začali sme septembrový semester v škole.
We started the September semester at school.
Septembrový dážď namočil celú ulicu.
The September rain soaked the whole street.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.