../ dmsp_15_ephemeris_20111001.txt 22-Jun-2023 16:12 109569 dmsp_16_ephemeris_20111001.txt 22-Jun-2023 16:12 109616 dmsp_17_ephemeris_20111001.txt 22-Jun-2023 16:12 109504 dmsp_18_ephemeris_20111001.txt 22-Jun-2023 16:12 109448