../ dmsp_15_ephemeris_20191101.txt 22-Jun-2023 00:42 109596 dmsp_16_ephemeris_20191101.txt 22-Jun-2023 00:42 109495 dmsp_17_ephemeris_20191101.txt 22-Jun-2023 00:42 109462 dmsp_18_ephemeris_20191101.txt 22-Jun-2023 00:42 109503