../ dmsp_15_ephemeris_20200601.txt 22-Jun-2023 00:44 109542 dmsp_16_ephemeris_20200601.txt 22-Jun-2023 00:44 109555 dmsp_17_ephemeris_20200601.txt 22-Jun-2023 00:44 109607 dmsp_18_ephemeris_20200601.txt 22-Jun-2023 00:44 109643