The Interior Ministry says it is important for members of the public to recognise the difference between the test signal and the public warning signal.File photo of a public warning system. Image: Petri Aaltonen / YleYle News11:11Finnish authorities will carry out a routine monthly test of the country's public warning sirens at 12pm on Monday 1 June, according to a press release by the Interior Ministry.The sirens are usually tested on the first Monday of each month, except on public holidays.In its statement, the ministry said it is important for members of the public to recognise the difference between the test signal and the public warning signal.The test signal is a continuous sound that lasts for seven seconds, and people do not need to take any action.The public warning signal, on the other hand, is a rising and falling sound that lasts for one minute. If people hear this signal, they should move indoors and follow the instructions of the authorities. The all-clear signal is a continuous sound that also lasts for one minute."Authorities sound a public warning signal to warn people outdoors about smoke, gas or other danger. Public warning sirens may also be used to warn people about drone threats if the rescue authorities so decide," the press release stated.The sirens form part of Finland's multi-platform emergency warning system, which also includes the publication of warnings via the 112 Suomi app.