../ dmsp_15_ephemeris_20201104.txt 22-Jun-2023 00:45 109580 dmsp_16_ephemeris_20201104.txt 22-Jun-2023 00:45 109531 dmsp_17_ephemeris_20201104.txt 22-Jun-2023 00:45 109316 dmsp_18_ephemeris_20201104.txt 22-Jun-2023 00:45 109509