../ dmsp_15_ephemeris_20181124.txt 22-Jun-2023 00:39 109414 dmsp_16_ephemeris_20181124.txt 22-Jun-2023 00:39 109407 dmsp_17_ephemeris_20181124.txt 22-Jun-2023 00:39 109233 dmsp_18_ephemeris_20181124.txt 22-Jun-2023 00:39 109291