../ dmsp_15_ephemeris_20210206.txt 22-Jun-2023 00:46 108135 dmsp_16_ephemeris_20210206.txt 22-Jun-2023 00:46 108146 dmsp_17_ephemeris_20210206.txt 22-Jun-2023 00:46 108003 dmsp_18_ephemeris_20210206.txt 22-Jun-2023 00:46 107969