../ dmsp_15_ephemeris_20170201.txt 22-Jun-2023 16:24 108070 dmsp_16_ephemeris_20170201.txt 22-Jun-2023 16:24 108049 dmsp_17_ephemeris_20170201.txt 22-Jun-2023 16:24 108036 dmsp_18_ephemeris_20170201.txt 22-Jun-2023 16:24 108000