../ dmsp_15_ephemeris_20191008.txt 22-Jun-2023 00:42 109492 dmsp_16_ephemeris_20191008.txt 22-Jun-2023 00:42 109593 dmsp_17_ephemeris_20191008.txt 22-Jun-2023 00:42 109506 dmsp_18_ephemeris_20191008.txt 22-Jun-2023 00:42 109529