../ dmsp_15_ephemeris_20161218.txt 22-Jun-2023 00:33 109422 dmsp_16_ephemeris_20161218.txt 22-Jun-2023 00:33 109379 dmsp_17_ephemeris_20161218.txt 22-Jun-2023 00:33 109286 dmsp_18_ephemeris_20161218.txt 22-Jun-2023 00:33 109415