../ dmsp_15_ephemeris_20121207.txt 22-Jun-2023 00:21 109293 dmsp_16_ephemeris_20121207.txt 22-Jun-2023 00:21 109332 dmsp_17_ephemeris_20121207.txt 22-Jun-2023 00:21 109284 dmsp_18_ephemeris_20121207.txt 22-Jun-2023 00:21 109339