../ dmsp_15_ephemeris_20181126.txt 22-Jun-2023 00:39 109548 dmsp_16_ephemeris_20181126.txt 22-Jun-2023 00:39 109342 dmsp_17_ephemeris_20181126.txt 22-Jun-2023 00:39 109315 dmsp_18_ephemeris_20181126.txt 22-Jun-2023 00:39 109352