../ dmsp_15_ephemeris_20200726.txt 22-Jun-2023 00:44 109505 dmsp_16_ephemeris_20200726.txt 22-Jun-2023 00:44 109639 dmsp_17_ephemeris_20200726.txt 22-Jun-2023 00:44 109593 dmsp_18_ephemeris_20200726.txt 22-Jun-2023 00:44 109538