../ dmsp_15_ephemeris_20180206.txt 22-Jun-2023 00:36 107997 dmsp_16_ephemeris_20180206.txt 22-Jun-2023 00:36 108108 dmsp_17_ephemeris_20180206.txt 22-Jun-2023 00:36 108028 dmsp_18_ephemeris_20180206.txt 22-Jun-2023 00:36 108078