../ dmsp_15_ephemeris_20191008.txt 22-Jun-2023 16:57 109492 dmsp_16_ephemeris_20191008.txt 22-Jun-2023 16:57 109593 dmsp_17_ephemeris_20191008.txt 22-Jun-2023 16:57 109506 dmsp_18_ephemeris_20191008.txt 22-Jun-2023 16:57 109529