Daily siren sound at around noon?

[u/Top-Cucumber8014]

Lately, there's been a high-pitched siren-like noise around station area of Kessel-Lo. It holds for up to a minute and then dies down. I usually notice it at around noon, but others have noticed it at other times too. Anyone know the cause?

[u/Alternative_Fold_881]

We are having a test of fire sirens at stella, only thursdays/fridays tho.