../ dmsp_15_ephemeris_20121006.txt 22-Jun-2023 00:20 109575 dmsp_16_ephemeris_20121006.txt 22-Jun-2023 00:20 109572 dmsp_17_ephemeris_20121006.txt 22-Jun-2023 00:20 109540 dmsp_18_ephemeris_20121006.txt 22-Jun-2023 00:20 109581