../ dmsp_15_ephemeris_20130921.txt 22-Jun-2023 16:35 109601 dmsp_16_ephemeris_20130921.txt 22-Jun-2023 16:35 109561 dmsp_17_ephemeris_20130921.txt 22-Jun-2023 16:35 109663 dmsp_18_ephemeris_20130921.txt 22-Jun-2023 16:35 109628