../ dmsp_15_ephemeris_20111011.txt 22-Jun-2023 00:18 109567 dmsp_16_ephemeris_20111011.txt 22-Jun-2023 00:18 109599 dmsp_17_ephemeris_20111011.txt 22-Jun-2023 00:18 109666 dmsp_18_ephemeris_20111011.txt 22-Jun-2023 00:18 109720