../ dmsp_15_ephemeris_20190701.txt 22-Jun-2023 16:56 109536 dmsp_16_ephemeris_20190701.txt 22-Jun-2023 16:56 109477 dmsp_17_ephemeris_20190701.txt 22-Jun-2023 16:56 109576 dmsp_18_ephemeris_20190701.txt 22-Jun-2023 16:56 109585