../ dmsp_15_ephemeris_20211214.txt 22-Jun-2023 00:49 109490 dmsp_16_ephemeris_20211214.txt 22-Jun-2023 00:49 109439 dmsp_17_ephemeris_20211214.txt 22-Jun-2023 00:49 109367 dmsp_18_ephemeris_20211214.txt 22-Jun-2023 00:49 109369