../ dmsp_15_ephemeris_20190207.txt 22-Jun-2023 00:39 108006 dmsp_16_ephemeris_20190207.txt 22-Jun-2023 00:39 108147 dmsp_17_ephemeris_20190207.txt 22-Jun-2023 00:39 107968 dmsp_18_ephemeris_20190207.txt 22-Jun-2023 00:39 107985