../ dmsp_15_ephemeris_20191118.txt 22-Jun-2023 00:42 109508 dmsp_16_ephemeris_20191118.txt 22-Jun-2023 00:42 109426 dmsp_17_ephemeris_20191118.txt 22-Jun-2023 00:42 109362 dmsp_18_ephemeris_20191118.txt 22-Jun-2023 00:42 109386