../ dmsp_15_ephemeris_20201205.txt 22-Jun-2023 00:45 109392 dmsp_16_ephemeris_20201205.txt 22-Jun-2023 00:45 109500 dmsp_17_ephemeris_20201205.txt 22-Jun-2023 00:45 109304 dmsp_18_ephemeris_20201205.txt 22-Jun-2023 00:45 109297