../ dmsp_15_ephemeris_20220614.txt 22-Jun-2023 00:51 109578 dmsp_16_ephemeris_20220614.txt 22-Jun-2023 00:51 109520 dmsp_17_ephemeris_20220614.txt 22-Jun-2023 00:51 109573 dmsp_18_ephemeris_20220614.txt 22-Jun-2023 00:51 109487