../ dmsp_15_ephemeris_20190221.txt 22-Jun-2023 00:39 108062 dmsp_16_ephemeris_20190221.txt 22-Jun-2023 00:39 108208 dmsp_17_ephemeris_20190221.txt 22-Jun-2023 00:39 108073 dmsp_18_ephemeris_20190221.txt 22-Jun-2023 00:39 108131