../ dmsp_15_ephemeris_20190820.txt 22-Jun-2023 00:41 109529 dmsp_16_ephemeris_20190820.txt 22-Jun-2023 00:41 109598 dmsp_17_ephemeris_20190820.txt 22-Jun-2023 00:41 109686 dmsp_18_ephemeris_20190820.txt 22-Jun-2023 00:41 109682