../ dmsp_15_ephemeris_20200415.txt 22-Jun-2023 00:43 109653 dmsp_16_ephemeris_20200415.txt 22-Jun-2023 00:43 109531 dmsp_17_ephemeris_20200415.txt 22-Jun-2023 00:43 109680 dmsp_18_ephemeris_20200415.txt 22-Jun-2023 00:43 109697