../ dmsp_15_ephemeris_20200430.txt 22-Jun-2023 16:33 109474 dmsp_16_ephemeris_20200430.txt 22-Jun-2023 16:33 109523 dmsp_17_ephemeris_20200430.txt 22-Jun-2023 16:33 109687 dmsp_18_ephemeris_20200430.txt 22-Jun-2023 16:33 109595