../ dmsp_15_ephemeris_20130904.txt 22-Jun-2023 00:22 109601 dmsp_16_ephemeris_20130904.txt 22-Jun-2023 00:22 109671 dmsp_17_ephemeris_20130904.txt 22-Jun-2023 00:22 109748 dmsp_18_ephemeris_20130904.txt 22-Jun-2023 00:22 109744