../ dmsp_15_ephemeris_20111004.txt 22-Jun-2023 00:18 109602 dmsp_16_ephemeris_20111004.txt 22-Jun-2023 00:18 109412 dmsp_17_ephemeris_20111004.txt 22-Jun-2023 00:18 109679 dmsp_18_ephemeris_20111004.txt 22-Jun-2023 00:18 109746