https://soho.nascom.nasa.gov/data/synoptic/gif/100520/?C=S;O=A
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https://soho.nascom.nasa.gov/data/synoptic/gif/100520/?C=D;O=A
Index of /data/synoptic/gif/100520
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https://umbra.nascom.nasa.gov/pub/lasco_level05/100520/
Index of /pub/lasco_level05/100520
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