../ dmsp_15_ephemeris_20221018.txt 22-Jun-2023 00:53 109641 dmsp_16_ephemeris_20221018.txt 22-Jun-2023 00:53 109496 dmsp_17_ephemeris_20221018.txt 22-Jun-2023 00:53 109491 dmsp_18_ephemeris_20221018.txt 22-Jun-2023 00:53 109501