../ dmsp_15_ephemeris_20180129.txt 22-Jun-2023 00:36 108080 dmsp_16_ephemeris_20180129.txt 22-Jun-2023 00:36 108002 dmsp_17_ephemeris_20180129.txt 22-Jun-2023 00:36 108035 dmsp_18_ephemeris_20180129.txt 22-Jun-2023 00:36 107848