../ dmsp_15_ephemeris_20120315.txt 22-Jun-2023 00:19 108169 dmsp_16_ephemeris_20120315.txt 22-Jun-2023 00:19 108020 dmsp_17_ephemeris_20120315.txt 22-Jun-2023 00:19 108090 dmsp_18_ephemeris_20120315.txt 22-Jun-2023 00:19 108160