../ dmsp_15_ephemeris_20121121.txt 22-Jun-2023 16:11 109333 dmsp_16_ephemeris_20121121.txt 22-Jun-2023 16:11 109283 dmsp_17_ephemeris_20121121.txt 22-Jun-2023 16:11 109393 dmsp_18_ephemeris_20121121.txt 22-Jun-2023 16:11 109315