../ dmsp_15_ephemeris_20190104.txt 22-Jun-2023 16:29 106572 dmsp_16_ephemeris_20190104.txt 22-Jun-2023 16:29 106542 dmsp_17_ephemeris_20190104.txt 22-Jun-2023 16:29 106493 dmsp_18_ephemeris_20190104.txt 22-Jun-2023 16:29 106450