../ dmsp_15_ephemeris_20190101.txt 22-Jun-2023 16:54 106580 dmsp_16_ephemeris_20190101.txt 22-Jun-2023 16:54 106449 dmsp_17_ephemeris_20190101.txt 22-Jun-2023 16:54 106359 dmsp_18_ephemeris_20190101.txt 22-Jun-2023 16:54 106204