../ dmsp_15_ephemeris_20110716.txt 22-Jun-2023 00:18 109580 dmsp_16_ephemeris_20110716.txt 22-Jun-2023 00:18 109551 dmsp_17_ephemeris_20110716.txt 22-Jun-2023 00:18 109698 dmsp_18_ephemeris_20110716.txt 22-Jun-2023 00:18 109629