../ dmsp_15_ephemeris_20101227.txt 22-Jun-2023 00:16 109430 dmsp_16_ephemeris_20101227.txt 22-Jun-2023 00:16 109218 dmsp_17_ephemeris_20101227.txt 22-Jun-2023 00:16 109273 dmsp_18_ephemeris_20101227.txt 22-Jun-2023 00:16 109354