../ dmsp_15_ephemeris_20191225.txt 22-Jun-2023 00:42 109534 dmsp_16_ephemeris_20191225.txt 22-Jun-2023 00:42 109360 dmsp_17_ephemeris_20191225.txt 22-Jun-2023 00:42 109318 dmsp_18_ephemeris_20191225.txt 22-Jun-2023 00:42 109199