../ dmsp_15_ephemeris_20181024.txt 22-Jun-2023 00:38 109506 dmsp_16_ephemeris_20181024.txt 22-Jun-2023 00:38 109452 dmsp_17_ephemeris_20181024.txt 22-Jun-2023 00:38 109529 dmsp_18_ephemeris_20181024.txt 22-Jun-2023 00:38 109522