../ dmsp_15_ephemeris_20101228.txt 22-Jun-2023 00:16 109366 dmsp_16_ephemeris_20101228.txt 22-Jun-2023 00:16 109340 dmsp_17_ephemeris_20101228.txt 22-Jun-2023 00:16 109283 dmsp_18_ephemeris_20101228.txt 22-Jun-2023 00:16 109422