../ dmsp_15_ephemeris_20190405.txt 22-Jun-2023 00:40 108154 dmsp_16_ephemeris_20190405.txt 22-Jun-2023 00:40 108287 dmsp_17_ephemeris_20190405.txt 22-Jun-2023 00:40 108238 dmsp_18_ephemeris_20190405.txt 22-Jun-2023 00:40 108175