../ dmsp_15_ephemeris_20200430.txt 22-Jun-2023 00:43 109474 dmsp_16_ephemeris_20200430.txt 22-Jun-2023 00:43 109523 dmsp_17_ephemeris_20200430.txt 22-Jun-2023 00:43 109687 dmsp_18_ephemeris_20200430.txt 22-Jun-2023 00:43 109595