../ dmsp_15_ephemeris_20230322.txt 22-Jun-2023 00:55 108261 dmsp_16_ephemeris_20230322.txt 22-Jun-2023 00:55 108292 dmsp_17_ephemeris_20230322.txt 22-Jun-2023 00:55 108172 dmsp_18_ephemeris_20230322.txt 22-Jun-2023 00:55 108278