../ dmsp_15_ephemeris_20121114.txt 22-Jun-2023 00:21 109433 dmsp_16_ephemeris_20121114.txt 22-Jun-2023 00:21 109459 dmsp_17_ephemeris_20121114.txt 22-Jun-2023 00:21 109272 dmsp_18_ephemeris_20121114.txt 22-Jun-2023 00:21 109507