../ dmsp_15_ephemeris_20230208.txt 22-Jun-2023 00:55 108111 dmsp_16_ephemeris_20230208.txt 22-Jun-2023 00:55 107985 dmsp_17_ephemeris_20230208.txt 22-Jun-2023 00:55 108000 dmsp_18_ephemeris_20230208.txt 22-Jun-2023 00:55 108018