../ dmsp_15_ephemeris_20191129.txt 22-Jun-2023 16:58 109456 dmsp_16_ephemeris_20191129.txt 22-Jun-2023 16:58 109520 dmsp_17_ephemeris_20191129.txt 22-Jun-2023 16:58 109279 dmsp_18_ephemeris_20191129.txt 22-Jun-2023 16:58 109271