../ dmsp_15_ephemeris_20190101.txt 22-Jun-2023 00:39 106580 dmsp_16_ephemeris_20190101.txt 22-Jun-2023 00:39 106449 dmsp_17_ephemeris_20190101.txt 22-Jun-2023 00:39 106359 dmsp_18_ephemeris_20190101.txt 22-Jun-2023 00:39 106204