../ dmsp_15_ephemeris_20200710.txt 22-Jun-2023 16:33 109531 dmsp_16_ephemeris_20200710.txt 22-Jun-2023 16:33 109547 dmsp_17_ephemeris_20200710.txt 22-Jun-2023 16:33 109586 dmsp_18_ephemeris_20200710.txt 22-Jun-2023 16:33 109552