../ dmsp_15_ephemeris_20181110.txt 22-Jun-2023 00:38 109451 dmsp_16_ephemeris_20181110.txt 22-Jun-2023 00:38 109496 dmsp_17_ephemeris_20181110.txt 22-Jun-2023 00:38 109378 dmsp_18_ephemeris_20181110.txt 22-Jun-2023 00:38 109400