../ dmsp_15_ephemeris_20191107.txt 22-Jun-2023 00:42 109620 dmsp_16_ephemeris_20191107.txt 22-Jun-2023 00:42 109411 dmsp_17_ephemeris_20191107.txt 22-Jun-2023 00:42 109326 dmsp_18_ephemeris_20191107.txt 22-Jun-2023 00:42 109372