../ dmsp_15_ephemeris_20191230.txt 22-Jun-2023 00:42 109322 dmsp_16_ephemeris_20191230.txt 22-Jun-2023 00:42 109415 dmsp_17_ephemeris_20191230.txt 22-Jun-2023 00:42 109221 dmsp_18_ephemeris_20191230.txt 22-Jun-2023 00:42 109300