../ dmsp_15_ephemeris_20180614.txt 22-Jun-2023 00:37 109482 dmsp_16_ephemeris_20180614.txt 22-Jun-2023 00:37 109438 dmsp_17_ephemeris_20180614.txt 22-Jun-2023 00:37 109641 dmsp_18_ephemeris_20180614.txt 22-Jun-2023 00:37 109572