As we read on the Gromadka Municipality website:

I hereby inform you that on 22 September 2022, at 9:00 a.m., alarm sirens will be activated in the localities of Gromadka and Różyniec as part of a training exercise of the Early Warning System for hazards, codenamed “September 2022” – a training signal: a steady, one-minute sound.

Mayor of Gromadka Municipality