../ dmsp_15_ephemeris_20190502.txt 22-Jun-2023 16:30 109525 dmsp_16_ephemeris_20190502.txt 22-Jun-2023 16:30 109662 dmsp_17_ephemeris_20190502.txt 22-Jun-2023 16:30 109611 dmsp_18_ephemeris_20190502.txt 22-Jun-2023 16:30 109560