../ dmsp_15_ephemeris_20181228.txt 22-Jun-2023 00:39 109468 dmsp_16_ephemeris_20181228.txt 22-Jun-2023 00:39 109392 dmsp_17_ephemeris_20181228.txt 22-Jun-2023 00:39 109224 dmsp_18_ephemeris_20181228.txt 22-Jun-2023 00:39 109250