../ dmsp_15_ephemeris_20161228.txt 22-Jun-2023 00:33 109439 dmsp_16_ephemeris_20161228.txt 22-Jun-2023 00:33 109366 dmsp_17_ephemeris_20161228.txt 22-Jun-2023 00:33 109323 dmsp_18_ephemeris_20161228.txt 22-Jun-2023 00:33 109222