../ dmsp_15_ephemeris_20180621.txt 22-Jun-2023 00:37 109471 dmsp_16_ephemeris_20180621.txt 22-Jun-2023 00:37 109545 dmsp_17_ephemeris_20180621.txt 22-Jun-2023 00:37 109545 dmsp_18_ephemeris_20180621.txt 22-Jun-2023 00:37 109509