../ dmsp_15_ephemeris_20230313.txt 22-Jun-2023 00:55 108213 dmsp_16_ephemeris_20230313.txt 22-Jun-2023 00:55 108263 dmsp_17_ephemeris_20230313.txt 22-Jun-2023 00:55 108306 dmsp_18_ephemeris_20230313.txt 22-Jun-2023 00:55 108247