../ dmsp_15_ephemeris_20221219.txt 22-Jun-2023 00:54 109254 dmsp_16_ephemeris_20221219.txt 22-Jun-2023 00:54 109299 dmsp_17_ephemeris_20221219.txt 22-Jun-2023 00:54 109336 dmsp_18_ephemeris_20221219.txt 22-Jun-2023 00:54 109396