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.
High ground could see 4 inches of snow on Saturday night
Mountain Road unlikely to open before Monday
Yellow warning for freezing temperatures tonight
School bangers night called off
AK47 and Uzi handed in to police
"No dispute" over Liverpool Ferry Terminal, says main contractor
More weekend bus strikes to come after 10-day walkout?
Minister to face question about bus strike