../ dmsp_15_ephemeris_20180529.txt 22-Jun-2023 00:37 109476 dmsp_16_ephemeris_20180529.txt 22-Jun-2023 00:37 109549 dmsp_17_ephemeris_20180529.txt 22-Jun-2023 00:37 109632 dmsp_18_ephemeris_20180529.txt 22-Jun-2023 00:37 109624