../ dmsp_15_ephemeris_20191020.txt 22-Jun-2023 16:57 109654 dmsp_16_ephemeris_20191020.txt 22-Jun-2023 16:57 109630 dmsp_17_ephemeris_20191020.txt 22-Jun-2023 16:57 109492 dmsp_18_ephemeris_20191020.txt 22-Jun-2023 16:57 109555