../ dmsp_15_ephemeris_20190701.txt 22-Jun-2023 00:41 109536 dmsp_16_ephemeris_20190701.txt 22-Jun-2023 00:41 109477 dmsp_17_ephemeris_20190701.txt 22-Jun-2023 00:41 109576 dmsp_18_ephemeris_20190701.txt 22-Jun-2023 00:41 109585