It is one word. It's origin is unknown, but it is suspected to be a corruption of the French phrase "M'aidez!" ("May-Deh! - Help Me!"). It is the verbal announcement that classically goes with the sending of "S.O.S. - "Mayday, Mayday!
The word mayday means somethings coming .Its like an obstacle
display, gainsay, mayday,
The word mayday was created by Frederick Mockford in 1923. He was a senior radio officer in London and he was told to create a easy word for distress calls. Thinking of the French phrase "venez m'aider", which means "come help me", he proposed the word mayday.
Mayday
For the holiday that is usually on the 1st of May, it is May Day. As the emergency call, it is one word and so it is Mayday.
mayday? sounds about right there
No one it was world wide.
mayday by the icarus account
SOS Mayday AAAAAAAAAAAAAAAAAAA
that the person being helped is in danger.
french: kenz m'dider - come help me
clue, hint, idea