The Office of Tynwald says it doesn't have any information about how much greenhouse gases were created by aircraft celebrating the Island's National Day.
A Freedom of Information request asked for the total greenhouse gas emissions for the Tynwald Day flypasts for 2022 and 2023.
In its response, the office said it didn't hold that data.
In 2022, two Texan T-1 RAF Trainers flew over the crowds in St Johns - but in 2023 there was no official flypast.
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