../ dmsp_15_ephemeris_20190605.txt 22-Jun-2023 16:56 109580 dmsp_16_ephemeris_20190605.txt 22-Jun-2023 16:56 109388 dmsp_17_ephemeris_20190605.txt 22-Jun-2023 16:56 109461 dmsp_18_ephemeris_20190605.txt 22-Jun-2023 16:56 109587