U.K has various meanings in the Governmental & Military category. Discover the full forms, definitions, and usage contexts of U.K in Governmental & Military.
A code meaning "information not available. An unidentified target. An aircraft or ship that has not been determined to be hostile, friendly, or neutral using identification friend or foe and other techniques, but that must be tracked by air defense or naval engagement systems.
Governmental & MilitaryAn equinox occurs twice a year (around 20 March and 22 September), when the plane of Earth's equator passes the center of the Sun. At this time the tilt of the Earth's axis is inclined neither away from nor towards the Sun. The term equinox can also be used in a broader sense, meaning the date when such a passage happens.
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