../ dmsp_15_ephemeris_20170628.txt 22-Jun-2023 00:34 109489 dmsp_16_ephemeris_20170628.txt 22-Jun-2023 00:34 109539 dmsp_17_ephemeris_20170628.txt 22-Jun-2023 00:34 109616 dmsp_18_ephemeris_20170628.txt 22-Jun-2023 00:34 109634