../ dmsp_15_ephemeris_20130429.txt 22-Jun-2023 00:22 109622 dmsp_16_ephemeris_20130429.txt 22-Jun-2023 00:22 109564 dmsp_17_ephemeris_20130429.txt 22-Jun-2023 00:22 109773 dmsp_18_ephemeris_20130429.txt 22-Jun-2023 00:22 109726