../ dmsp_15_ephemeris_20220820.txt 22-Jun-2023 00:52 109700 dmsp_16_ephemeris_20220820.txt 22-Jun-2023 00:52 109588 dmsp_17_ephemeris_20220820.txt 22-Jun-2023 00:52 109695 dmsp_18_ephemeris_20220820.txt 22-Jun-2023 00:52 109680