This is the 15362nd most frequent Polish word.
sobotnimi
"Related to Saturdays" (instrumental plural form of "sobotni").
'Sobotnimi' is an instrumental plural form that describes the evenings (plural) of Saturday.
Spotkaliśmy się na sobotnimi wieczorami, aby pośpiewać karaoke.
We met on Saturday evenings to sing karaoke.
'Sobotnimi' is used in instrumental case to describe the Saturday-related attribute of workshops (plural).
Uczestniczyliśmy w sobotnimi warsztatami w lokalnym centrum kultury.
We participated in Saturday workshops at the local cultural center.
'Sobotnimi' signifies that the bonfires are associated with Saturday, instrumental plural form.