../ dmsp_15_ephemeris_20170924.txt 22-Jun-2023 16:26 109650 dmsp_16_ephemeris_20170924.txt 22-Jun-2023 16:26 109577 dmsp_17_ephemeris_20170924.txt 22-Jun-2023 16:26 109700 dmsp_18_ephemeris_20170924.txt 22-Jun-2023 16:26 109734