../ dmsp_15_ephemeris_20121119.txt 22-Jun-2023 00:21 109438 dmsp_16_ephemeris_20121119.txt 22-Jun-2023 00:21 109250 dmsp_17_ephemeris_20121119.txt 22-Jun-2023 00:21 109482 dmsp_18_ephemeris_20121119.txt 22-Jun-2023 00:21 109478