../ dmsp_15_ephemeris_20170630.txt 22-Jun-2023 00:34 109420 dmsp_16_ephemeris_20170630.txt 22-Jun-2023 00:34 109469 dmsp_17_ephemeris_20170630.txt 22-Jun-2023 00:34 109493 dmsp_18_ephemeris_20170630.txt 22-Jun-2023 00:34 109637