../ dmsp_15_ephemeris_20190614.txt 22-Jun-2023 00:41 109506 dmsp_16_ephemeris_20190614.txt 22-Jun-2023 00:41 109407 dmsp_17_ephemeris_20190614.txt 22-Jun-2023 00:41 109610 dmsp_18_ephemeris_20190614.txt 22-Jun-2023 00:41 109627