This was
your sky.
A Dust Devil of Mars
This image from the HiRISE camera on the Mars Reconnaissance Orbiter shows a Martian dust devil. It was spotted late in the northern Martian spring, tracking south and east across the Amazonis Planitia. The core of the whirling dust devil is about 30 meters in diameter. Its plume of lofted dust reaches more than 800 meters above the surface, blown eastward by a westerly breeze. These dust devils are common on Mars.
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In tropical astrology, 13 APR 2012 falls under Aries (♈). The sign's window runs from 03-21 through 04-19. Aries is the constellation traditionally tied to spring's arrival in the northern hemisphere. The Sun was crossing this region of the sky on 13 APR 2012.