../ dmsp_15_ephemeris_20170425.txt 22-Jun-2023 16:25 109631 dmsp_16_ephemeris_20170425.txt 22-Jun-2023 16:25 109633 dmsp_17_ephemeris_20170425.txt 22-Jun-2023 16:25 109764 dmsp_18_ephemeris_20170425.txt 22-Jun-2023 16:25 109625