../ dmsp_15_ephemeris_20101201.txt 22-Jun-2023 00:16 109393 dmsp_16_ephemeris_20101201.txt 22-Jun-2023 00:16 109324 dmsp_17_ephemeris_20101201.txt 22-Jun-2023 00:16 109316 dmsp_18_ephemeris_20101201.txt 22-Jun-2023 00:16 109449