../ dmsp_15_ephemeris_20220523.txt 22-Jun-2023 00:51 109560 dmsp_16_ephemeris_20220523.txt 22-Jun-2023 00:51 109629 dmsp_17_ephemeris_20220523.txt 22-Jun-2023 00:51 109678 dmsp_18_ephemeris_20220523.txt 22-Jun-2023 00:51 109521