../ dmsp_15_ephemeris_20180909.txt 22-Jun-2023 00:38 109546 dmsp_16_ephemeris_20180909.txt 22-Jun-2023 00:38 109652 dmsp_17_ephemeris_20180909.txt 22-Jun-2023 00:38 109632 dmsp_18_ephemeris_20180909.txt 22-Jun-2023 00:38 109640