../ dmsp_15_ephemeris_20181010.txt 22-Jun-2023 00:38 109593 dmsp_16_ephemeris_20181010.txt 22-Jun-2023 00:38 109614 dmsp_17_ephemeris_20181010.txt 22-Jun-2023 00:38 109637 dmsp_18_ephemeris_20181010.txt 22-Jun-2023 00:38 109556