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Mayday is an emergency procedure word used internationally as a distress signal in voice-procedure radio communications.. It is used to signal a life-threatening emergency primarily by aviators and mariners, but in some countries local organizations such as firefighters, police forces, and transportation organizations also use the term.
The appropriate lights may also be displayed during the day at times of restricted visibility or other necessary circumstances. [3] Vessels under 7 meters are generally not required to display day shapes even if they are required to display lights at night. [4] A square black flag displayed over the ball may be used as a distress signal. [5]
A ship flying no flags may also be understood to be in distress. [6] For one country, the Philippines, an inverted flag is a symbol of war rather than distress. [7] If any flag is available, distress may be indicated by tying a knot in it and then flying it upside-down, making it into a wheft. [8]
Most of us have heard of May Day, but what is May Day all about? Here's the history behind the holiday, and a list of the best traditions (including the May Day basket!)
The origins of May Day can be confusing because May Day has a few different meanings depending on where you are in the world. On the one hand, May Day is a traditional spring festival dating back ...
SOS is a Morse code distress signal ( ), used internationally, originally established for maritime use.In formal notation SOS is written with an overscore line (SOS), to indicate that the Morse code equivalents for the individual letters of "SOS" are transmitted as an unbroken sequence of three dots / three dashes / three dots, with no spaces between the letters. [1]
Nearly 20% of American adults reported having an anxiety disorder in the past year — and many are more likely to feel uneasy and anxious as the sun sets. Experts reveal the common triggers.
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