../ dmsp_15_ephemeris_20150531.txt 22-Jun-2023 00:28 109490 dmsp_16_ephemeris_20150531.txt 22-Jun-2023 00:28 109529 dmsp_17_ephemeris_20150531.txt 22-Jun-2023 00:28 109520 dmsp_18_ephemeris_20150531.txt 22-Jun-2023 00:28 109557 dmsp_19_ephemeris_20150531.txt 22-Jun-2023 00:28 109626