../ dmsp_15_ephemeris_20180726.txt 22-Jun-2023 00:37 109570 dmsp_16_ephemeris_20180726.txt 22-Jun-2023 00:37 109564 dmsp_17_ephemeris_20180726.txt 22-Jun-2023 00:37 109658 dmsp_18_ephemeris_20180726.txt 22-Jun-2023 00:37 109613