../ dmsp_15_ephemeris_20180223.txt 22-Jun-2023 00:36 108165 dmsp_16_ephemeris_20180223.txt 22-Jun-2023 00:36 108169 dmsp_17_ephemeris_20180223.txt 22-Jun-2023 00:36 108122 dmsp_18_ephemeris_20180223.txt 22-Jun-2023 00:36 108032