../ dmsp_15_ephemeris_20181025.txt 22-Jun-2023 00:38 109528 dmsp_16_ephemeris_20181025.txt 22-Jun-2023 00:38 109525 dmsp_17_ephemeris_20181025.txt 22-Jun-2023 00:38 109478 dmsp_18_ephemeris_20181025.txt 22-Jun-2023 00:38 109502