../ dmsp_15_ephemeris_20181116.txt 22-Jun-2023 00:39 109565 dmsp_16_ephemeris_20181116.txt 22-Jun-2023 00:39 109434 dmsp_17_ephemeris_20181116.txt 22-Jun-2023 00:39 109290 dmsp_18_ephemeris_20181116.txt 22-Jun-2023 00:39 109316