../ dmsp_15_ephemeris_20150401.txt 22-Jun-2023 00:27 108207 dmsp_16_ephemeris_20150401.txt 22-Jun-2023 00:27 108254 dmsp_17_ephemeris_20150401.txt 22-Jun-2023 00:27 108319 dmsp_18_ephemeris_20150401.txt 22-Jun-2023 00:27 108312 dmsp_19_ephemeris_20150401.txt 22-Jun-2023 00:27 108232